Tuesday, December 13, 2016




1.The Structure of an Essay

 Your essay should start with an introductory paragraph. There are actually many different ways to begin an essay; therefore, the format of the introductory paragraph is flexible. Often, essays begin with a general introductory statement. This statement could be an anecdote, description, striking statistic, a fact that will lead to your thesis, etc. Beginning this way, you will use the first few sentences to prepare, or "lay the groundwork" for your thesis, and use the last sentence of the first paragraph to present your thesis. However, your thesis statement can be anywhere in your introduction. In a longer essay, you can even wait to present your thesis until the second paragraph or later. Also for a longer essay, you should begin to introduce a few supporting ideas in the first couple of paragraphs. These supporting ideas should be the topics that you will discuss in full in your body paragraphs. For a short essay, presenting supporting ideas during the introduction is optional.

         Your second paragraph generally begins the body of the paper. (For a longer paper, the body of the paper may not begin until the third paragraph or later). This paragraph should begin with a topic sentence that introduces the first supporting idea (the support for your thesis). You should use the middle of the paragraph to discuss your support, give examples, and analyze the significance of these examples. Your last sentence of the body paragraph could be used to draw a conclusion for that supporting idea, or to transition into the next paragraph.


          Your next two body paragraphs should follow the same format as your first body paragraph. They should each have a separate topic sentence and supporting ideas, but the three paragraphs should work together to prove your thesis. If you are writing a longer paper, you will have more than three body paragraphs, but they should all follow this format.


       The form of your conclusion, like your introduction, is flexible. One good way to conclude a paper is to begin the last paragraph with a statement that reflects on what has been stated and proved, without repeating it exactly. Then you should briefly restate your key points to gently remind the reader how well you proved your thesis. Your conclusion should end with a statement or idea that leaves a strong impression and provokes further thought.


The Essay

          To define the essay briefly, one can say that it is a piece of writing usually short (3 to 10 pages), written in prose, and that may be on any subject. The essay is generally based on other people's statements. In the essay you can include your personal opinion, and some examples to illustrate your point of view. It is written about one topic, just as a paragraph is. However, the topic of an essay is too long and too complex to discuss it in one paragraph. Therefore, you must divide the topic into several paragraphs, one for each major point. In general, essays have three basic parts: introduction, body and conclusion.

     1.The Introduction

It is the first section of your essay. This makes it extremely important, because first impressions are often lasting ones. It consists of two parts: a few general statements about your subject to attract your reader's attention, and a thesis statement, that states the specific subdivisions of your topic and/or the "plan" of your paper. The introduction then, begins with remarks to interest people. As it progresses, it should present general ideas or facts to orient the reader. Then, it will narrow its focus, and move from general to specific facts smoothly and logically.

      2.The body Paragraphs

They are the longest section of you essay. In a short essay there are usually three body paragraphs,each one considering in detail one aspect of the essay's controlling idea. This is called a three-point essay. At the beginning of each of your support paragraphs, there is a topic sentence that tells what the rest of your text is going to be about. This sentence should direct your readers back to the controlling idea and indicate which aspect of it you are going to discuss. Once you present your topic, you need details and facts to support it. It is not enough to state your position; your reader needs to be convinced that your point of view is valid an accurate. There is not any rule that determines how long a body paragraph should be. The more relevant detail you can bring in to support each of your topic sentence, the clearer your points will be.

      3.The Conclusion

The ideas in this part must be consistent with the rest of your essay. In it, you should restate the controlling idea. This restatement is usually more effective when it is located at the beginning of the conclusion. It reminds your public about the major points you were trying to make, and it indicates your essay is about to end. Many writers like to end their conclusion with a final emphatic sentence. This strong closing statement will make your readers think about the implications of what you wrote. You do not introduce your points in your conclusion. 
Reading 3: Network Devices
HUB
Hub is one of the basic icons of networking devices which works at physical layer and hence connect networking devices physically together. Hubs are fundamentally used in networks that use twisted pair cabling to connect devices. They are designed to transmit the packets to the other appended devices without altering any of the transmitted packets received. They act as pathways to direct electrical signals to travel along. They transmit the information regardless of the fact if data packet is destined for the device connected or not.

Switches
Switches are the linkage points of an Ethernet network. Just as in hub, devices in switches are connected to them through twisted pair cabling. But the difference shows up in the manner both the devices; hub and a switch treat the data they receive. Hub works by sending the data to all the ports on the device whereas a switch transfers it only to that port which is connected to the destination device.  A switch does so by having an in-built learning of the MAC address of the devices connected to it. Since the transmission of data signals are well defined in a switch hence the network performance is consequently enhanced. Switches operate in full-duplex mode where devices can send and receive data from the switch at the simultaneously unlike in half-duplex mode. The transmission speed in switches is double than in Ethernet hub transferring a 20Mbps connection into 30Mbps and a 200Mbps connection to become 300Mbps. 
Bridges
A bridge is a computer networking device that builds the connection with the other bridge networks which use the same protocol. It works at the Data Link layer of the OSI Model and connects the different networks together and develops communication between them. It connects two local-area networks; two physical LANs into larger logical LAN or two segments of the same LAN that use the same protocol.
Network protocols
Network protocols define a language of instructions and conventions for communication between the network devices. It is essential that a networked computer must have one or more protocol drivers. Usually, for two computers to interconnect on a network, they must use identical protocols. At times, a computer is designed to use multiple protocols. Network protocols like HTTP, TCP/IP offer a basis on which much of the Internet stands.

ISDN (Integrated Services Digital Network)
ISDN are used to send over graphic or audio data files. It is a WAN technology that can be used in place of a dial up link. The accessibility of ISDN depends upon the provision of the service by the service provider, the quality of the line set up to your area. It surely provides higher speed than a modem and has the capability to pick up the line and drop it considerably at a faster rate. ISDN can create numerous communication routes on a single line.

Modems
Modem is a device which converts the computer-generated digital signals of a computer into analog signals to enable their travelling via phone lines. The ‘modulator-demodulator’ or modem can be used as a dial up for LAN or to connect to an ISP. Modems can be both external, as in the device which connects to the USB or the serial port of a computer, or proprietary devices for handheld gadgets and other devices, as well as internal; in the form of add-in expansion cards for computers and PCMCIA cards for laptops.


Сүлжээний төхөөрөмжүүд
HUB
Hub нь сүлжээний физик түвшинд ажилладаг мөн сүлжээний төхөөрөмжүүдийг физикээр холбодог үндсэн нэг төхөөрөмж юм. Hub төхөөрөмжүүдийг үндсээр нь холбохын тулд эрчилсэн хос кабель ашигладаг. Тэдгээр нь дамжуулсан пакетыг хүлээн авч ямар ч хуваарилалтыг өөрчлөхгүйгээр бусад нэмсэн төхөөрөмжүүдийн пакетуудыг дамжүүлах зорилготой юм. Тэд замын дагуу явсан цахилгаан дохиог чиглүүлэх үйлдэлтэй. Тэд мэдээлэл харгалзахгүй бодит өгөгдөл пакетаар дамжуулан илгээгдэх бол төхөөрөмж холбогдоно эсвэл үгүй.
Свитчүүд
Свитчүүдийн уялдаа холбооотой цэг нь Ethernet  сүлжээ юм ердөө л hub шиг ажилладаг.  Свитч нь төхөөрөмжүүдийн эрчилсэн хос кабелийг дамжуулан тэдэнд холбогдсон байна. Харин ялгаа нь hub нь зөвхөн тухайн төхөөрөмжинд холбогдсон порт руу, свитч нь төхөөрөмж дээрх бүх порт руу өгөгдөл илгээж ажилладаг. А свитч нь холбогдсон төхөөрөмжүүдийг MAC хаягаар нь хязгаарладаг. Дохио дамжуулахдаа сайн тул свитчийн сүлжээни гүйцэтгэл нь сайжирсан. Свитчүүд нь full-duplex горимд төхөөрөмж нь мэдээлэл илгээх болон хүлээн авах боломжтой болдог, half-duplex горимд нэгэн зэрэг үйл ажиллагаа явуулдагаараа ялгаатай.
Bridge
Bridge тэр протоколыг ашигладаг бусад гүүр сүлжээ бүхий холболт барьж компьютерийн сүлжээний төхөөрөмж юм. Энэ нь OSI загвар нь Data Link давхаргад ажил, хамтад нь өөр өөр сүлжээг хооронд нь холбодог ба тэдний хоорондын холбоог хөгжүүлдэг. Энэ нь хоёр орон, газар нутгийн сүлжээг хооронд нь холбодог; том логик LAN руу хоёр бие LAN-гууд нь, эсвэл яг тэр протоколыг ашигладаг нэг LAN хоёр сегментийг.
Сүлжээний протокол
Сүлжээний протокол нь сүлжээний төхөөрөмжүүдийн хооронд холбоо заавар, конвенцийн хэл тодорхойлно. Энэ нь сүлжээнд компьютер нэг ба түүнээс дээш протокол жолооч байх ёстой нь чухал юм. Ихэвчлэн хоёр компьютер нь сүлжээний хооронд нь холбохын тулд тэд ижил протоколыг ашиглах ёстой. Заримдаа компьютерийн олон протоколуудыг ашиглахаар хийгдсэн байна. HTTP гэх мэт сүлжээний протокол, TCP / IP Internet Үзэгчдийн суудлаас их дээр нь үндэс санал болгож байна.
ISDN (Integrated Services Digital Network)
ISDN график болон аудио өгөгдөл файл гаруй илгээх ашиглаж байна. Энэ нь залгадаг холбоос оронд ашиглаж болох WAN технологи юм. ISDN хүртээмж үйлчилгээ үзүүлэгч үйлчилгээ үзүүлэх хамаардаг, шугамын чанарын Таны байгаа газарт тохируулагдсан. Энэ бол гарцаагүй модем илүү хурд үзүүлж, мөрийг авах ба хурдан хэмнэлээр нэлээд нь унах чадвартай байдаг. ISDN нь нэг мөрөнд олон харилцаа холбооны замыг бий болгож чадна.

Модемууд
Модем утасны шугамаар дамжуулан тэдний зорчигч, идэвхжүүлэхийн тулд аналог дохио болгон компьютер Компьютерийн бий тоон дохиог хувиргадаг төхөөрөмж юм. "Modulator-demodulator" буюу модем LAN нь залгах хүртэл ашиглаж эсвэл ISP-тай холбогдохыг болно. Модемууд төхөөрөмж USB болон компьютерийн сериал порт, эсвэл гар багаж төхөөрөмжүүд болон бусад төхөөрөмжүүд, түүнчлэн дотоод байдлаар өмчийн төхөөрөмжүүдэд холбогддог шиг, аль аль нь гадаад байж болно; Зөөврийн компьютеруудад компьютер болон PCMCIA картууд нь нэмэлт нь өргөтгөх карт хэлбэрээр.


Reading2: Abstract: ‘ The Irwin handbook of Telecommunications’
           The book is divided into five parts, as were previous editions, corresponding to major divisions in telecommunications equipment. Chapter One is an introduction to voice and data. The remainder of Part  One is devoted to concepts that are common to the industry. In Part One, we discuss voice and data fundamentals , pulse code modulation , outside plant, structured wiring ,access technologies local area network  principles , and the other building blocks of telecommunications networks.
            Part Two covers switching. The part begins with a discussion of signaling, including new protocols Session Initiation protocols (SIP) and ENUM, which are new since the last edition , and hold considerable promise for the future. A chapter on the public switched telephone network follows, discussing how it works and the quality requirements that IP must achieve to support voice. Two chapters follow to explain in over view how local and toll switches and integrated services digital network (ISDN) function. Circuit switching has been at the heart of the telephone industry for more than a century and retains stability and service quality that packet technologies cannot yet provide. We devote chapter to it. Part Two ends with a discussion of softswitches, which are a new generation of IP switches that serve advanced IP networks.
            Part Three covers transmission equipment. Separate chapters discuss the fundamental technologies of fiber optics, microwave radio, satellite transmission, cellular and PCS radio systems, wireless, and video. Fiber lies at the heart of the telecommunications infrastructure and is arguably the most important development in the industry’s history. It displaced long-haul microwave, but that technology is becoming more important than ever with an emphasis on communications mobility. Customer demand is fueling a host of new wireless services and protocols that operate in the microwave bands and are receiving a great deal of attention. Video is also becoming a vital Internet access service, and more. The new hybrid fiber-coaxial cable architecture enables cable to compete with the conventional telephone system.
             Part Four discusses customer premise equipment. As with the public telephone network, customer premise switching is evolving to IP. We begin this part with a discussion of station equipment, followed by a chapter follow on conventional digital switching and the newer IP switching. We next discuss automatic media distribution systems, which are evolving from the older automatic call distribution systems. These respond to customer demands for contact alternatives besides the telephone. Other chapters discuss voice processing, electronic messaging, and facsimile.
             Part Five pulls together the building blocks we have discussed in the earlier chapters into completed and functioning telecommunications networks. This part illustrates the tremendous variety o alternatives that are available and discusses how and where they are applied. We begin this part with the discussion of enterprise networks, which is a blanket term covering the networks organizations use to link the enterprise. Following that, other chapters cover metropolitan area networks, wide area data networks, frame relay, asynchronous transfer mode , and IP data networks. The IP chapter discusses multi-protocol label switching (MPLS), which is evolving into a platform for handling multimedia applications over IP networks. We discuss testing and network management systems and how they are evolving to enable humans to cope with the increasing complexity of modern networks .
                 The final chapter in the book looks ahead a few years with a view of where telecommunications technology is headed, 


Товч агуулга: Ирвиний харилцаа холбооны гарын авлага
Энэ ном нь таван хэсэгт хуваагдсан, өмнөх хэвлэлтэй ижил, харилцаа холбооны голлох тоног төхөөрөмжүүдийг авч үзсэн. Эхний оршил хэсэгт нь  радиот болон өгөгдлийн тухай. Эхний хэсэгт бид радио болон өгөгдөл гэсэн чухал зүйлсийн талаар мөн импульсэн модуляцийн код, гаралтын төхөөрөмж, шугамын бүтэц, холбооны технологийн хандалт, орон нутгийн сүлжээний бүрэлдэхүүн хэсгүүд мөн бусад харилцаа холбооны сүлжээний бүтцийн элементийг хэлэлцсэн.
     Хоёрдугаар хэсэг нь свитчийн хамгаалалт. Эхний хэсэгт дохио болон SIP, ENUM гэсэн шинэ протоколуудыг хамтад нь оролцуулсан бөгөөд шинэ хэвлэлд өнгөрсөн хэвлэлээс нилээн чухал санааг тусгасан. Тухайн бүлэгт свитч нь утсан сүлжээг хэрхэн ажиллуулах болон радиог хэрхэн олон нийтэд хүргэх тухай ярилцах юм. Хоёрдугаар бүлэгт орон нутгийн тоон сүлжээн цогц үйлчилгээний холболтын үйл ажиллагааг хэрхэн дээрээс нь харахыг тайлбарлав. Хэлхээний холболт нь утсан үйлдвэрлэлийн зуунд илүү хадгалагдаж үлдсэн бөгөөд пакет технологиуд нь тогтвортой байдал, үйлчилгээний чанарыг хараахан хангаж чадахгүй байгаа. Хоёрдугаар хэсгийн төгсгөлд softswitches болон шинэ үеийн дэвшилтэд IP свитчүүд нь IP сүлжээнд үйлчлэх өөрчлөлтүүд зэргийн тухай ярина.
     Гуравдугаар хэсэгт дамжуулах тоног төхөөрөмж хамаардаг. Бүлэг тус тусад нь шилэн оптик, богино долгионы радио, хиймэл дагуулын дамжуулагч, үүрэн болон PCS радио систем, утасгүй болон видео гэсэн үндсэн технологиуд ярилцана. Шилэн кабель нь харилцаа холбооны дэд бүтцийн төвд оршдог бөгөөд мэдээж салбарын түүхэн дэх хамгийн чухал нээлт юм. Энэ нь урт бичил богино долгионы шилжүүлэлт, гэхдээ энэ технологи нь харилцаа холбооны хөдөлгөөн байдлыг онцлохын хамт хэзээ ч чухал болж байна. Харилцагчид шинэ утасгүй сүлжээ бий болгох ба бичил долгионы зурваст нь үйл ажиллагаа явуулах ба хүлээн авах талд асар их анхаарал хандуулахыг шаарддаг. Видео нь мөн интернет холболтын чухал хэсэг болсон. Шилэн коаксиаль кабелийг бий болгож энгийн телефон системийн кабельд өрсөлдөх боломж өгсөн.
     Дөрөвдүгээр хэсэгт хэрэгчийн тоног төхөөрөмжийг авч үзнэ. Хэрэглэгчийн суурин утас болон сүлжээний  хэрэглэгчийн интернет протоколын хаяг нь нийтийн тохиргоотой байна. Бид тоног төхөөрөмжийн зогсолт, дэмжлэг  үзүүлэх боломжуудыг хэлэлцэх нь энэ бүлгийн эхлэл юм. Энэ бүлгийн уламжлалт тоон холболт болон шинэ интернет протокол солихыг дагана уу. Бид дараагийн автомат хэвлэл мэдээллийн түгээх тогтолцоо, хуучин автомат дуудлага хувиарлалтын систем хөгжиж буй талаар хэлэлцэнэ. Эдгээр утгаар холбоо барихаас гадна хэрэглэгчийн эрэлт хэрэгцээнд хариу өгнө. Бусад бүлгүүд дуу хоолой боловсруулах, электрон мессеж, факсыг хэлэлцэнэ.
      Тавдугаар хэсэгт нь бид байгууламжийн хамт замын талаар тусгаж, харилцаа холбооны сүлжээний үйл ажиллагааны талаар өмнөх бүлэгт хэлэлцсэн. Энэ хэсэгт нь хувилбаруудын маш олон төрлийг харуулж, хэрхэн хаана хэрэглэгдэж байгаа талаар дурьдсан. Бид энэ хэсгээс эхлэн аж ахуйн нэгж сүлжээ мөн байгууллага аж ахуй нэгжийг холбох, ажиллах сүлжээний нэг томъяёог хэлэлцэнэ. Тэрнийг дараа бусад бүлгүүд хотын сүлжээ, гадаад сүлжээ, фрейм дамжуулах, асинхрон дамжуулах горим болон интернет протоколын өгөгдлийг сүлжээг хамарна. Интернет протоколын бүлэг нь олон протоколын свитчийн хаягтай, тэр нь среатпорм руу хөгжиж интернет протокол дээр мультимедиа аппликейшинтай ажиллана. Бид шалгалт болон сүлжээний удирдлагын системийн хэлэлцэх ба тэдгээрийг идэвхжүүлэхийн тулд хувьсан өөрчлөгдөж, хүн төрөлхтөн өсөн нэмэгдсэнээр орчин үеийн сүлжээний төвөгтэй байдлыг даван туулсан.
    Номын сүүлийн бүлэгт харилцаа холбооны технологи хэдэн жилийн өмнөөс л толгойлж байсан нь харагдаж байна. 
Speaking4: Top IT Trends of 2016


In my roled istribution canit's important to love five years out to see what industry is headed in the long term but much of my attention is focused on thenear future identifying the technology and trends that are ready to be put to use a tablet over the next 12 month swith that in mind here for the top IT trends that I believe a poised to gainreal traction in 2016 my number for trend is the software-defined data center from the beginning data centers will be made up of silos of servers storage and networking hardware but that model is redundant and expensive and it makes itdifficult to allocate resources quickly that's a problem for IT teams that are feeling pressure to improve responsiveness and decrease maintenance costs in a software-defined data centerall the essential elements of a computing platform a pool together virtualized and managed to a common set of application programming interface swith all of the data centers resources pulled together it's easier and fasterto monitor and reallocate compute storage network in and even security resources according to the needs of the business production-ready software-defined data center offerings and now available from establish edvendors as well as from new cameras and I tea shops are looking for safe andproven ways to move to a software-defined environment that delivers the stability and the agility that their businesses require my number three top trend is what I call a mobile first approach until now most mobility initiatives will focus on providing mobile devices with the same access andsecurity that we find on desktop and laptop PCs the mobile versus approach turns out world view on its headit's not about matching the PC experience and a small device any moreit's about getting the most of the unique advantages that mobile platform shave to offer such as the ability to easily capture pictures documents andalso knowing the precise location of the device as mobile devices get more convenient security with a broader adoption of biometricsI expect more businesses will be thinking mobile-first in 2016 for both customers and employees my second top i t-tried 4 2016 is machine learningI see machine learning is a logical evolution of the exponential growth ofdata and data analytics that we've been seen over the last few years big data and data analytics today are mostly concerned with mine in largequantities of data to provide insights that leaders can use to make informed decisions with speed however those results of focus on helping business leaders interpret pastactivity a machine learning on the other hand is about using the same data setsto predict future behavior today Google Facebook and Amazon or relying onmachine learning to deliver content ads and products that use your past activityto predict what you'll be interested in next BM's Watson initiative extends its significant machine learning capabilities to IBM customers a machine learning is also at the heart of Google's efforts to develop self-driving vehicles as the engineers at Google willtell you it's easier to drive a car when you can predict what's around the corner rather than having to focus on the road behind you and running the business isno differentthat's why i believe machine learning will be one of this year's top trends togain traction as organizations like to predict the future as well as they cananalyze the past my top IT trends for 2016 is the internet of things specifically the industrial Internet of Things one study from the mckinsey global institute estimates that I OT will deliver up to 11 trillion dollarsof global economic impact on an annual basis just 10 years from now and asignificant proportion of that was going to be made up the industrial IOT forexample one of a minuteindustrial equipment customers has begun in bed in connected sensors into thefield based equipmentthis gives our customers the ability to let maintenance teams know when acomponent is about to break down but before it actually happens this simple warning helps avoid costly downtime and emergency repairsit also ensures that the service technicians have exactly the right partsthey need when they arrive on site 2016 will be the year the IOT hits criticalmass the opportunity is simply too large for that but the building blocks for theecosystem and now in place making it easier faster and less expensive toprototype and roll out real worldI OT solutions that's why its my number-one trend for 2016 to find outhow these and other top technology trends are being applied inside theenterprise in the year to comestay tuned to this text and series and to my blog behind the firewall and don't forget to give us a thumbs up or post a comment below this video is a value to you thank you for watching and see you next time.
Speaking 3 :Types of computer


Networking is the word people use when they're talking about connecting computers together so they can share data with each other and all connect to the internet at the same time let's take a closer look at the key components that make up a simple easy to set up network think of a network is something similar to your body central nervous system at the top of the network is a brain that handles all the traffic coming through this is called a router the brain is connected to a spine that send signals throughout your network this device is called a switch and it distributes signals to all of your computers and devices via network cables now let's check out each of the components of a wired network and more detail we'll start with the router a router has a smart little computer inside that identifies all of the computers and devices on your network and assigns a unique number to each one techie people call this an IP address a router also connects to the internet outside your home via a modem that can be provided by your dsl or cable internet provider a router is always at work managing the tons and tons of information your computers and devices send and receive and controlling which computers and devices get what information and when so how does a router actually send information from the internet to your computers and devices and how does it enable your computers to share information with each other the answer lies with that device we mentioned earlier a switch a switch sins traffic through your network to the places it needs to go every network home router has a switch with four ports built right into it you can also get wireless routers from network that use radio signals to do the same thing as a switch but these still have those four ports built into them so you can use wires with them too when you're buying a router for use in a wired Network pay attention to the speed of the built-in switch the fastest switches are called gigabit and they're perfect for applications like streaming video in your home meanwhile routers switches called fast ethernet are great for essential tasks like web surfing email and online gaming now say you have more than four idea as you'd like to plug into a router you need more ports the solution is easy you'll need an additional switch which again is that thing that's already built into your router in this case though you just need to switch portion and not another router because your network doesn't need two brains after all network has switches with as few as five ports as well as some that feature 24 ports or more once again if you need the fastest speeds go for a gigabit switch your smarty pants network router will recognize these new connections and start sending data to them right away here's one more thing to keep in mind some people often confuse a switch with a related device called a hub which is obsolete you just need to know that hubs were replaced by switches because switches do the same thing but with a lot more speed and smarts a router a switch and network cables all come together to create a fast and reliable wired network that works a lot like your body's nervous system fortunately you don't have to be super brainy to understand how it all works.

Speaking 2: Hardware

A guide to the components inside my computer .Hello and welcome to videojug we're going to show you what the major components inside your computer are and tell you a little about what each of them do guiding us on this tour will be Phil Borton of East a technology support in brighton.
Step 1: The major components the major components of a computer are the motherboard the cpu or central processing unit ram or the random access memory the graphics card the power supply the hard disk or hard drive the optical drive also known as a CD or DVD drive.
Step 2: hardware and software all of these components are usually found within the Tower of a desktop computer they are referred to as hardware hardware can be thought of as the actual physical components that go into the computer software refers to the programs and systems that operate within the hardware.
Step 3: The motherboard the motherboard is the heart of the computer it is the largest and most fundamental component of a pc and every other component is attached to it in some way this is because all the different components used the mother board to communicate and work with each other the motherboard has a series of slots sockets and connectors for attaching the components of a pc in most cases the memory accessory cards and cpu are installed directly onto the motherboard the drives and peripherals communicate with the motherboard through wired connections there are a wide range of motherboards to choose from they different features speed capacity and the cpu supported they also different size shape and layout this is commonly referred to as the form factor.
 Step4: For the cpucpu stands for central processing unit this is the brain of the computer and is often referred to as the processor or the chip it is found under a heatsink and fan and sits directly on the motherboard the cpu directs coordinates and communicates with the other components and performs all of the thinking it is not really thinking what a cpu actually does it perform mathematical calculations it is the software that people write that translates these calculations into useful functions for us.
Step 5: Ram ram stands for random access memory and comes as modules and predefined amounts it is also found directly on the motherboard and usually in one two or four slots the memory chip store information temporarily for short term used by the cpu ram is used to store information for files that are actually being used by the cpu at any given time the computer's ram memory is an entirely different thing from the hard disk memory the hard this stores information permanently for long-term use.
Step 6:The graphics card the graphics card or video card translates information into the graphics and tax that appear on the monitor screen most motherboards now include a slot specifically designed for the graphics adapter called the AGP slot this stands for advanced graphics port modern graphics adapters usually incorporate some memory write on the card to improve their performance.
Step 7 : The power supply this supplies power to the other components which is why it has so many wires coming out of it is usually positioned at the back top corner of the computer case the power supply has a fan built into it to keep itself and the computer cool.
Step 8: The hard disk a hard disk which is also called a hard drive is much like a filing cabinet the programs and data is stored on the hard disk and the computer accesses them as they are needed when the computer accesses the hard drive it is reading and moving the stored information into the ram memory that memory is the temporary workspace however the original file is still on the hard disk and has left undisturbed until the file is saved when the computer stores or saves information it writes a data to the hard disk that process results in the old file being replaced or modified with the new information if you save data to a new file or install new software the information is written to the disc in an available unused portion of the disk.

Step 9: the optical drive the optical drive is often called a DVD drive or a CD drive it sits at the front of the computer for ease of access and use a laser to read and write information to CDs and DVDs done.
Speaking 1: What is ICT

Hi my name is Even Huan Hi my name is Chris Horn and we want to talk to you about the ICT sector in Ireland ICT stands for information and communications technology and that means that covers all of the technologies and businesses involved in the creation and processing of digital information that includes all fines of computing from building web pages to write and software to control a rocket from assembly the home computer to managing a complete office computer system from creating special effects for the film to designing the technologies broadcast TV and radio across the globe from studying the appropriate computer equipment to customer to providing the support needed to ensure the successful use of a new software system in a large organization this is a big industry really big in fact it's the largest business in the world and it's growing all of the time why well because at its heart it's concerned with making life easier and better for everyone of us hi I'm Lionel alexander and the Vice President and Managing Director of hewlett-packard manufacturing here in the league slip kill their the ICT sector is a very key sector that not only drive the economy and the future island but more importantly is changing the lifestyle of people every day in ireland there over 70,000 people working in over 1,300 firms directly involved an effective IC to use a big part of our economy much bigger than it is in the UK or most of the rest of the world Ireland a tiny country barely visible on the globe is one of the top three exporter of software and the world neither 10 top software companies in the world have significant operations here islands is home to many global players across all I city business areas such as internet space data storage semiconductors telecommunications software and computer systems with instantly recognizable names such as Intel del Microsoft IBM Apple HP Google Ericsson sap yahoo and even Facebook the sector accounts for approximately a third of the country's expert which is hugely important for our economy by any measure the ICT sector has been a significant drive in the arch economy whether in terms of employment output for the creation of wealth as well as been engaged in a range of business functions they provide the enabling technology to other sectors it has been a source of successful Irish enterprise and startups and has contributed men stage the economic success of the country in church the ICC section Ireland can boast world-class industry achievement one of the main reasons we have such a strong presence in the sector's equality and diversity of our workforce the location of the world's top level software companies in Ireland has meant the critical mass of technical and professional expertise has been reached in the sector the availability of highly skilled individuals are both graduate and senior level positions allows software companies to access a group of people that is essential to achieve growth in the industry we also have a lot of qualified people from a wide range of nationalities who can contribute their technical knowledge and skills and their native language yourselves the ever-increasing need to provide services globally from operations based here recent figures and students entering carrot level 2 arising demand for engineering and technology courses we are now realizing that the world needs more people who are technologically we're in every industry in Sector the National Skills strategy compiled by the expert group on future skills needs has found that the requirement for technical knowledge will rise across almost all occupations in the future even in times of rising unemployment demand for highly qualified graduates in disciplines including computer science and engineering is expected to continue this is also true or of the supporting roles which the technology depends the current economic downturn may affect the timing of that demand but it is unlikely to affect the overall trend we as a nation let's ensure that I remains one of the best performance in terms of producing people who combined their technical know-how from the science engineering technology areas people include the development of ICT skills into their career planning will always be in a stronger position to adapt to the changing world Connery and ensure that Ireland's ICT that there continues to hold this position on the world stage my name is tomorrow and the general manager of Intel and are kids coming to the system today who have an interest in science engineering and technology should have no fears about the future of working in that industry here in Ireland so if you want to have an aspiration that's beyond essentially a good job and a good career think about the aspiration of being involved in an enterprise that makes a difference across the whole globe Intel in Ireland and companies like Intel and Ireland have a challenge on their hands and that's to continue to help Ireland b'fast be nimble because we're operating on a global stage and Arlen needs people working in engineering and technology it needs the best brains working in those environments so that Ireland as a nation can prosper and grow the future is changing IC technology is changing the world it's going to change the way people consumed in the knowledge that the way people distribute the knowledge and the way people use their knowledge if you want to change the world and if you want to make a difference choose ICT as a career band.