Parts Of Computer

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PARTS OF A COMPUTER. Most computers consist of an electronic centralprocessing unit (CPU) to which attached different input devices, output devices, and storages devices. T he main parts of a desktop computer are enclosed in a box know as the system unit. T his containsan electronic board called the motherboard that holds and connects together the main electronic components. And look at the chart below. Processor (microprocessor) ROM (Read Memory) Controls thesystem and processes the data

Only Stores the program instructions the computer needs to start up RAM (random Access Stores the data being Memory processed Cache memory Speed up the processing T hemotherboard usually has empty electronic connectors, called expansion slots, into which additional electronic boards (sometimes called expansion cards) can be plugged. For example more memory can be addedby plugging memory board (e.g.SIMMS) into the memory slots. Sound facilities can be added by plugging a sound card into an expansion slot. T his is one way of upgrading a motherboard. Another way isto replace the motherboard with a newer and better one. T he syste m unit usually also contains a small speaker (or loudspeaker), the power supply, and some storage devices. T hese often include: ahard disk drive with a fix disk that can store a very large amount of data; a floppy disk drive that uses removable floppy disks (diskettes); a CD-ROM or DVD drive that is used for reading CD-ROM or DVDdrive disks (particularly in multimedia computers). Some other devices may be included in the system unit but most input and output devices are plugged into the back of the system unit usingconnectors know as ports. Power is a function of both speed and capacity. T he power of a computer depends on the combination of all the components. When buying a computer, you can often choose between...