Processing : The Microprocessor

The microprocessor is the hardware device that processes data. The microprocessor contains electronic circuitry which can :

• Perform mathematical calculations on data.
• Make decisions using data.
• Handle control signals from devices such as keyboards and hard disks that require the processor to do something.
• Move data from one part of the computer to another.

Most personal computers (known as microcomputers) contain just one microprocessor. Minicomputers and mainframe computers may contain many microprocessors. All of the microprocessors that are contained in one computer are known as the computer's Central Processing Unit or C.P.U. A computer that contains more than one microprocessor is able to carry out more than one task at the same time and is described as being capable of parallel processing.

GCSE ICT Companion 04 - (C) P Meakin 2004