103a-az PC Lab

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= Open it up! Lab =

The main parts inside a computer, and how they work

  • the microprocessor

It is a tiny engine that is roughly the equivalent of a computer's brain. It receives data and instructions and thinks and decides what to do with them. Microprocessors found in most computers are produced by Intel Corporation, who made the first processors to be used in home computers. Pentium is the name of the series of the latest microprocessors by Intel. Materially, microprocessors are very smartly integrated circuits that can execute computer programs. Transistors, usually minuscule semiconductor devices, are 'the fundamental building blocks' of these circuits. The speed of processors are measured in Megahertz(Mhz), which is a measure of frequency. In other words, the speed of processors is measured by the number of the most basic operations it can perform in a second.

  • the memory

[1]Although memory is technically any form of electronic storage, it is used most often to identify fast, temporary forms of storage. The CPU accesses memory according to a distinct hierarchy. Whether it comes from permanent storage (the hard drive) or input (the keyboard), most data goes in random access memory (RAM) first. The CPU then stores pieces of data it will need to access, often in a cache, and maintains certain special instructions in the register.[/1] Data in computers is stored in bits, which are binary digits, that have value of either 0 or 1. 8 bites equal 1 byte, 1,000,000 bites equal 1 Megabyte, and 1,000,000,000 bites equal 1 Gigabyte.

  • the disk drive

Or the hard disk drive is used for for comparatively much more permanent storage of information. On the inside of the hard drive, which is sealed from the outside, there are platters, on which information is stored as magnetic signals, read-write heads, which convert the electric signals coming and going to the other parts of the computer into magnetic signals and vice versa. Data is stored in tracks, which are circles located on the platters in large numbers. The read-write heads read magnetic fields in minuscule holes made in the tracks and converts them into electric signals, or bits.

  • the cd-rom

[2]In computing, sound reproduction, and video, an optical disc is a flat, circular disc (usually polycarbonate) wherein data are stored in the pits (or bumps) in its flat surface — sequentially on the continuous, spiral track extending from the innermost track to the outermost track, covering the entire disc surface. The data are accessed in the disc when a special material (often aluminium) is illuminated with a laser diode. The pits distort the reflected laser light.[/2]

  • the power-supply

The work of the power supply is to convert the AC(alternating current) coming from the sockets into DC(direct current). The reason is that the AC is usually 110Volts whereas computers need only 3.3, 5, or 12 Volts to operate, and the power supply generates these low volts by changing an AC to a DC.

  • the battery

When we turn on the computer the clock goes on correctly as if it never stopped. That is the battery's work. It supplies energy for the clock.

  • the cables

The cables are the transporters of information between the parts of the computer. The information is transported in bits, that is, in electric signals.


Lab report

Name :: Saran Amartuvshin ::

The date of the lab :: Monday, September 22, 2008 ::

The model number of the computer :: DELL OptiPlex GX400 ::

Our Team :

103az wikipage-1.jpg

Yura and Saran

I had been really looking forward to this class. I had been waiting for the chance to at last lay my hands on the secret insides of the computer :P. I did enjoy the class. But I think it was a little bit more complicated than I had anticipated. All the hidden locks and levers were tricky. Nevertheless, Yura and us did manage to empty the case in the end:).

Here we begin. Our computer in its intact state.


After some search and struggle, we open it up.


We pull out the power supply,


The memories,


DVD Rom,


The fan,


The floppy disk player(an old computer!),


The Video processor,


The Sound processor,


THE Processor (important thing!, and tiny),


The Battery,


and The Hard Disk.


Then we get to the Mother Board.


And then...Hurray! We have an empty case B).


Want to know more about computers? You could always go http://www.google.com/ and look it up :D.