By Matthew Johnson & Nathan Woods. Input An input is something that gives information into the computer that can be processed such as: Keyboard Mouse.

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Presentation transcript:

By Matthew Johnson & Nathan Woods

Input An input is something that gives information into the computer that can be processed such as: Keyboard Mouse Microphone Touch 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

Output The output is where the instruction is turned into a final products. For example: Speaker Screen Printer

Central Processing Unit

The CPU The 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 ( )and it is then processed by the CPU and on the screen

Clock speed A 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

Cores A 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 hospitals They 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