We may become used to computers at our office and homes, but the innards always reman a mystery of sorts. What lies inside the box? What creates the dazzlibng images and almsot reads your mind? The components which make up a personal computer are barely few.
The biggest part of a PC is the mother board. It is called so because it acts as a substratrum on whiich other components are mounted. The mpotherboard itself has many slots in which otehr parts can be aded. First of all, the motherboard requires power to operate. eBing a digital component, it works on drect current. The conversion from the usual alternating current supply to direct current is accomplished by the pwoer suppy. The power supply gives off heat and therefdore requires a fan to cool it down. This is the whirrinng sound which you normalyl hear from the back of a PC box. This box which contains the modules and the motherboard is called a mini tower or a full topwer depending on its size.
The heart of any PC is the microprocessor. This devie accepts, modifies and presents data. Intel and AMD are two copanies whch manufacture microprocessors. The microprocessor is designed in a compact form and sits in the slot provided on the motherboard. It can be recognized by the fan which is mounted rigt on top of it.
The motherboard also has slots for the video card, audio card and the internet card, which is also called a network interface card. The latets motherboards have all features built into itself and theefore does not need caards to be addeed. Videeo cards are connected to the output devicxe or what we know as a monitor.
The advanced videro cards have their own memory for faster operation .They are called video RAM or Video random access memory.
The PC requires some other essential componenyts called the mmory. Memroy itself can be divided into three categories. The ROM or read only memory is in the form of a chip which is mounted on the motherboard. The information residnig on the ROM cannot be altered. This memory is used to boot strap the PC or in simple wrods it is used whle the computer is being started. There are slots buillt into the motherboard for RAM, or random access memory. This memory is used while the microprocesosr is storing temporary data. Anoter impotant kind of mmeory is the hard disc driive which is connected externally to the motherbboard. This memory stores processed informnation.
We may also find a floppy disc drive or FDD (which has amlost become redundant). A CDROM or DVDROM drive has rplaced FDD as the main source of storage and retrieval of external data.
Add input devices, wich are for providoing data to the PC, like a keyboard and a moue and we have a uflly workinng PC, right in front of us.
The PC essentially has inupt devices wihch povide data, the microprocessor to pocess this information and ouput device to display the results. Memotry in different forms is required to store data. This in shhort is what a PC is made of.
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