What is a computer system?

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Hardware (22/11/02)

What is a computer system?

A computer system is made up of 4 things :

                                                                         

A computer system makes up a computer and makes it run

these input devices are things like a mouse and a keyboard

a output devices are things like speakers a monitor and

a printer. The processor is a 2-way system it can output

Information and you can input information.  

Graphics tablet

 The graphics tablet is a flat pad, which the user can write or draw on with a device similar pen called a stylus. The surface of the pad is sensitive to the position of the stylus and the stylus itself is sensitive to the pressure applied by the users the stylus is moved across the pad the movement is translated to a drawing on the computer monitor.

Sound sampler

Sound sampler is when you can record a piece of music or voice and edit it or you can mix other pieces of music with others.

Monitors

The computer monitor or VDU (visual display unit) works by cathode ray tubes (CRTs) contain an electron gun at the back of the tube which fires electrons at phosphor dots coating the inside of the screen. When struck by electrons the phosphor dots glow to give colours.

Computer input device advantages and disadvantage

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The mouse

The pointer on the monitor screen mirrors the movement of a mouse by the users hand. Under the mouse there is a ball which rolls as the mouse is moved. This movement of the ball causes to shafts to rotate inside the mouse one-shaft records the movement in the north-south direction and the other shaft records the east-west movement. When the screen pointer is over on icon or on a menu the mouse button can be clicked double clicked or dragged to create a process.

Touch pad

 You find these on laptops ...

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