What is a microprocessor?
A brief introduction to microprocessors
A microprocessor is the main component in a microcomputer or a personal computer (PC).
It is the "brain" of the computer, which performs the logical and mathematical operations and which controls many other operations e.g. for storing and retrieving data, in a computer.
Microprocessors are also used in pocket calculators, TV-sets, washing machines, electronic typewriters and other products.
A microprocessor is a large scale integrated circuit which contains ten thousands or even millions of components, mainly transistors, on a relatively small silicon chip. This chip is mounted in a plastic casing or other type of casing which also provides the connector pins for joining to other components and to the power supply voltages.
A microprocessor always needs additional components ( for input, output, memory and others ) that it can function, which is then called a microprocessor system .
A microprocessor is controlled by a program, which must be loaded into it before the microprocessor can work.
The program must be written in a language which the microprocessor understands.
The microprocessor system executes the program step by step, one command after the other, until the program end.
The microprocessor system, together with a good program, can help to do many routine work faster and with less mistakes than doing it manual.
Common microprocessors for personal computers today are:
Pentium, Pentium II, Pentium III, Celeron, AMD K6-2, Duron, Athlon K7, Thunderbird and others.
Nearly every month better or more powerful microprocessors are introduced to the computer market.
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