Basic ICT SystemsBy Matthew Johnson & Nathan Woods

InputAn input is something that gives information

into the computer that can be processed such as:

KeyboardMouse

MicrophoneTouch screen

Processing The processing is done by the CPU

(central processing unit)The CPU receives the binary instructions ->

processes it-> and then executes the processed infomation

OutputThe output is where the instruction is turned

into a final products. For example:SpeakerScreenPrinter

CPUCentral Processing Unit

The CPUThe modern CPU uses several

microprocessors (multi core) It is often described as the brain of the CPU,

it is a part of the software that is inside the main computer

All the binary code goes to the CPU and is processed by the CPU and turned into an output which we can understand (in decimal) eg. When a letter “a” is typed the computer turns it into binary (01010101)and it is then processed by the CPU and on the screen

Clock speedA core can only do one thing at a time it

just appears to do several things at a time because its so fast

With every tick of the clock the CPU is able to process one piece of data or execute one instruction

The CPU clock speed is measured in cycles per second. 1cycle per second known as 1 Hertz (Hz)

A computer running at 1GHz can carry out a thousand million instructions per second

Typical modern day computer is 3GHz

CoresA CPU can do more than one instruction at

a time by sharing it by having more than one core

Running two CPUs gives you twice the performance

A modern processing device may contain two or even four CPUs. Some chip-making companies call these CPUs 'cores'. So a dual-core device means it contains two CPUs and a quad-core contains four.

How are CPU’s used in hospitalsThey are used as a part of the database

system that can be used to store all the data of patients, and all their information and staff and all there data and times tables

So for a system that large it takes time to go and decode all the data and find whatever it is they are searching for, so that’s where the CPU comes in and processes the instruction