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Inside a computer (C.S)

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发表于 2019-02-06 16:57:48 来自手机 | 显示全部楼层 |阅读模式
Edited by ShaAzad at 2019-02-06 17:01

[h2 style="text-align: center;"][strong style="color: rgb(194, 79, 74);"]Inside a computer[/strong][/h2][div style="text-align: center;"][br][/div]Have you ever looked inside a computer case, or seen pictures of the inside of one? The small parts may look complicated, but the inside of a computer case isn't really all that mysterious. This lesson will help you master some of the basic terminology and understand a bit more about what goes on inside a computer.[br][br][strong style="color: rgb(249, 150, 59);"]Motherboard[/strong][br][br][br][br]The [strong]motherboard[/strong] is the computer's [strong]main circuit board[/strong]. It's a thin plate that holds the CPU, memory, connectors for the hard drive and optical drives, expansion cards to control the video and audio, and connections to your computer's ports (such as USB ports). The motherboard connects directly or indirectly to every part of the computer.[br][br][strong style="color: rgb(70, 172, 200);"]CPU/processor[/strong][br][br][br][br]The central processing unit (CPU), also called a [strong]processor[/strong], is located inside the [strong]computer case[/strong] on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands. Whenever you press a key, click the mouse, or start an application, you're sending instructions to the CPU.[br][br]The CPU is usually a [strong]two-inch ceramic square[/strong] with a [strong]silicon chip[/strong] located inside. The chip is usually about the size of a thumbnail. The CPU fits into the motherboard's [strong]CPU socket[/strong], which is covered by the [strong]heat sink[/strong], an object that absorbs heat from the CPU.[br][br]A processor's [strong]speed[/strong] is measured in [strong]megahertz (MHz)[/strong], or millions of instructions per second; and [strong]gigahertz (GHz)[/strong], or billions of instructions per second. A faster processor can execute instructions more quickly. However, the actual speed of the computer depends on the speed of many different components—not just the processor.[br][br][strong style="color: rgb(139, 170, 74);"]RAM (random access memory)[/strong][br][br][br]RAM is your system's [strong]short-term memory[/strong]. Whenever your computer performs calculations, it temporarily stores the data in the RAM until it is needed.[br][br]This [strong]short-term memory disappears[/strong] when the computer is turned off. If you're working on a document, spreadsheet, or other type of file, you'll need to [strong]save[/strong] it to avoid losing it. When you save a file, the data is written to the [strong]hard drive[/strong], which acts as [strong]long-term storage[/strong].[br][br]RAM is measured in [strong]megabytes (MB) or gigabytes (GB)[/strong]. The [strong]more RAM[/strong] you have, the more things your computer can do at the same time. If you don't have enough RAM, you may notice that your computer is sluggish when you have several programs open. Because of this, many people add [strong]extra RAM[/strong] to their computers to improve performance.[br][br][span style="color: rgb(194, 79, 74);"][strong]Hard drive[/strong][br][/span][br][br][br]The [strong]hard drive[/strong] is where your software, documents, and other files are stored. The hard drive is [strong]long-term storage[/strong], which means the data is still saved even if you turn the computer off or unplug it.[br][br]When you run a program or open a file, the computer copies some of the data from the [strong]hard drive[/strong] onto the [strong]RAM[/strong]. When you [strong]save[/strong] a file, the data is copied back to the [strong]hard drive[/strong]. The faster the hard drive, the faster your computer can [strong]start up[/strong] and [strong]load programs[/strong].[br][br][strong style="color: rgb(77, 128, 191);"]Power supply unit[/strong][br][br][br][br]The power supply unit in a computer [strong]converts the power[/strong] from the wall outlet to the type of power needed by the computer. It sends power through cables to the motherboard and other components.[br][br] [br][br] [br][br]

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发表于 2019-02-06 17:32:16 来自手机 | 显示全部楼层
thanks for share
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发表于 2019-02-06 19:38:01 来自手机 | 显示全部楼层
Good.. Thanks for sharing!!
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发表于 2019-02-06 19:49:39 来自手机 | 显示全部楼层
good to know
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发表于 2019-02-06 23:14:49 来自手机 | 显示全部楼层
NYC post {:14_6:}
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发表于 2019-02-07 00:15:54 来自手机 | 显示全部楼层
good share
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发表于 2019-02-22 20:39:08 来自手机 | 显示全部楼层
Nice share brother thank you
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发表于 2019-02-26 03:06:46 来自手机 | 显示全部楼层
nice share
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发表于 2019-02-26 09:00:54 来自手机 | 显示全部楼层
nice.     
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 楼主| 发表于 2019-03-10 14:30:19 来自手机 | 显示全部楼层
thanks guys
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