What we will describe here is a desktop personal computer complete with the ability to connect you to the Internet through your telephone line and play mu8sic and video for your entertainment. Virtually all personal computer (or PC) available in the market will fall in this category, with some additional or omissions.
Most PCs have a Central Processing Unit or CPU as their brain, a monitor as their output device and a keyboard plus a mouse as their input devices, In addition, the computer will have permanent memory known as Read Only Memory or ROM on fixed or hard disk drives and temporary memory as silicon chips called Random Access Memory or RAM. The permanent memory includes your computer’s software programmers as well as data that you wish to retain for future use. The permanent memory is not lost when you switch off your computer. On the other hand, temporary memory is used by the computer’s CPU while the computer’s temporary memory is lots when you shut your computer down.
These hardware items from the bare essentials of the physical parts of a working PC. In your PC, these there may be many additional hardware items called peripherals such as CD-ROM f\drive or a printer. Let us now discuss the hardware items one by one by one.
The computer is box-shared. It may be flat for use on the desktop, or a vertical tower for placing below the dust. It consists of:
such as Intel’s Pentium or MAD Catholic. These processors range from 100 MHz to the latest 2,200 MHz clock speeds. This is not the final speed, however. Processors continue to become faster relentlessly. According to Moor’s law, the processor speed doubles every 18 months.
2.A Motherboard,
which functions as an organizer for the hardware parts that must work in unison with the processor. For example, the RAM, the ports for connecting the keyboards and the mouse, the video cards for connecting the keyboards and mouse, the video card that controls the monitor’s display and many such components are mounted on or plugged into the motherboard.
These components are electrically connected to each other through a bus or trucking of copper conductors etched on the motherboard. The processor speed is controlled by a quartz crystal clock that provides the pluses required to synchronizes the working component are electrically connected to etched on the motherboard. The processor speed is controlled by a quart.
3.One or more Hard Disk (s)
whose magnetic memory is used to save the data and programmer files. Hard Disks are fixed inside inside the computer reads as soon as it is switched on. The ROM program, called the bootstrap programmer provides the start-up instructions. After ROM programmer, called the bootstrap programmer provides the start-up instructions. After the bootstrap programmer is loaded, it instructs the computer to load the operating system such as Windows and memory.
4.Some PCs have a Graphic Ace;aerator Card. This card is usually used for video games and for graphics rendering, which require a great deal of fast calculations to produce rapidly changing and complex pictures and graphics on the monitor;s screen.
5.To produce the stereophonic sound requi8red for m,multimedia games and movies, the computer may have a separate sound card or, the sound capability may be built into the motherboard itself.
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