A computer system

The heart of any computer system is the Control Process Unit (C.P.U.). This may be divided into three parts -the Control Unit, the Arithmetic and logis unit, and de main memory.

The Control Unit, as its name implies, controls all the operations of the computer. It generates timing impulses by means of a time clock and sends command pulses to the Arithmetic and Logic Unit. It thus serves as an interface (a link) between the main memory and ALU, interpreting instructions given by the programmer.

The Arithmetic and Logic Unit, which contains wired operators and registers, deals with calculations. The main memory (also called Control Unit) or store), stores both the data being processed and the program that controls the processing. Main memory should be distinguished from auxiliar memory, which is a means of storin (savin) are quantities of data on media such as magnetic disks and magnetic tapes that may be removed from the C.P.U. and fetched only when required. A frontal proccessor may be required to control the flow of data between the CPU and various peripherals.

The CPU is surrounded by peripheral units. Several types of peripheral units can be distinguished, namely input peripheral, output peripheral and input-output peripheral.
Input peripherals, as their name implies, convey the data from the external world to the Central Processing Unit. They include keyboards phot-sensible peus and even microphones, just to name a few.

Outpul peripherals, on the other hand, give the results of the processing of data on devices as VDUs (Visual Display Units) or printers, which are the most common output devices. Input/output peripherals (I/O for short) can be used for both of the above-mentioned functions and an work either way. Typical examples are disk units.

Any such devices directly connected to the CPU are called on line peripherals, as oppsed to offline peripherals such as the obsolete card-punches. Data acquisition consists of editing brute data so that it can be fed into a computer in a form the computer system or mainframe computer, there is usually an interruptible power system, which regulates any fluctuation in voltage from the main power, as well as providing an emergency power supply, should there be a power cut. A power cut would result not only in the breakdown of the computer but also the loss of all the data being processed. An efficient system should also include acondicionate air and dust must be kept to a minimum.