Microprocessor
From the Simple English Wikipedia, the free encyclopedia that anyone can change
A microprocessor is an electronic component that is used by a computer to do its work. Microprocessor is small silicon chip that contains millions of very small components incuding transistors, resistors, and diodes that work together. Microprocessors help to do everything from writing to searching the Web. For a microprocessor, every actions requires lots of precise instructions. Whether someone is writing or surfing the Web, the microprocessor in a computer processes a data using the same three steps over and over again. It does these three steps at incredible speed—millions of times a second.
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[change] Fetch, Decode and Execute
Microprocesser use three steps commonly called Fetch, Decode, and Execute.
[change] Fetch
A command that gets the next instruction from memory.
[change] Decode
Microprocessor determines what the instruction means.
[change] Execute
Microprocessor performs the instruction (microprocessor carry out a computer program or process).
[change] Facts and figures
- Transistor in a microprocessor are 2 microns wide. A micron is 0.0001 of a centimeter. A microprocessor transistor then is 0.0005 cm (0.0001965 in) wide.
- There are over 20 million of transistors in modern microprocessors.
- Microprocessors are made of quartz, metals, chemicals and water.
- From start to finish, it takes about 2 months to make a microprocessor.
- Microprocessors are grouped together by the size of their data bus or address bus. They are also grouped into CISC and RISC types.
