The Computer System

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WARNING! HARDWARE GROUPS 1. Feed data = inserire i dati(nel computer) 2. CPU = Central Processing Unit = Processore 3. Keep = conserva, mantiene OPERATIONS 4. Consisting of = composto da FUNCTIONING 5. Interlinked = interconnessi 6. The faster the CPU works, the more powerful the computer is = Più velocemente la CPU lavora(funziona),più potente sarà il computer

The computer system

Hardware groups

There are four important groups that we can distinguish in a computer system:

4 Storing. After processing,this part functions as a memory which keep* data for the future use

3 Output. The equipment which displays the results of the computer's work (Like printer or screen)

2 Processing. The equipment that,with the help of CPU* ,follows the instruction and transform the data in a result

1 Input. The equipment needed to feed data* into the computer

Functioning

All the pieces are interlinked* through a communication network called "bus" where the centre is the motherboard that is controlled by CPU.

The CPU is the most important element of a computer's hardware,it processes the data and in the same time controls the operation of all the other pieces of hardware

The faster the CPU works, the more powerful the computer is*. The speed of CPU is called "clock speed" measured in hertz,where each cycle represents one operation.

Operations

A computer is a complex device consisting of* many different components.For its functioning it can be divided into four groups:

4.Store the results in its memory

3.Show results of the processing

2.Process data according to the instructions

1.Take in data