A silicon chip that contains a CPU. In the world of personal computers, the terms microprocessor and CPU are used interchangeably. At the heart of all personal computers and most workstations sits a microprocessor. Microprocessors also control the logic of almost all digital devices, from clock radios to fuel-injection systems for automobiles.
Three basic characteristics differentiate microprocessors:
# Instruction set: The set of instructions that the microprocessor can execute.
# bandwidth : The number of bits processed in a single instruction.
# clock speed : Given in megahertz (MHz), the clock speed determines how many instructions per second the processor can execute.
In both cases, the higher the value, the more powerful the CPU. For example, a 32-bit microprocessor that runs at 50MHz is more powerful than a 16-bit microprocessor that runs at 25MHz.
In addition to bandwidth and clock speed, microprocessors are classified as being either RISC (reduced instruction set computer) or CISC (complex instruction set computer).
History of Microprocessor
The Processor (microprocessor) is the component hardware as known to a computer. This is the unit of information processing. In itself it is unable to perform an action, whatever. His work was limited to reading programs (sequences of instructions in assembly language) to decode and execute. It takes no action, simply run "stupidly" what is asked. This is the program, conditional statements, which is responsible for "intelligence" of computers. To his advantage, he performs these tasks without error and quickly. For an introduction to electronic circuits based microprocessor
The first microprocessor appeared in 1972 with the 4004 Intel, for a Japanese manufacturer of computing machine. It refuses to size (dimension) excessive. Intel puts then on the market without conviction but with the success that we know. The 80s saw the emergence of these circuits with Zylog Z80 (compatible with standard instructions with the 8080), 6800 Motorola (including the following have been used also by the MAC), the 6500... With the arrival of XT IBM and the use of 8088 (8086 for PC compatible), Intel became the first manufacturer market late 80s.
The processor family Intel compatible have evolved. Before considering all the hocus that designers of microprocessors currently use to improve performance (structure of microprocessors), A little history of models used in PCs and their characteristics.
Some of Microprocessors
1.088 and 8086
2. 286
3. 386
4. 486
5. Pentium
6. Pentium MMX, K6-2 and K6-3
7. Pentium II - Pentium III and Celeron
8. Pentium III Coppermine
9 . AMD Athlon, Duron and Thunderbird
10. Pentium IV
11. Pentium 4 EE
12. Sempron
13 Microprocessors 64-bit
14. Athlon 64-bit AMD
15. Intel Core, Core 2 and Core 2 Duo
16. Intel I7 - 18. Intel I5
Introduction To Computers
One of the biggest innovations of science is the computer. It is machine that is used for the storage, retrieval and the manipulation of the data. Although the human mind is very sharp but it is not able to store much data in its memory. Therefore, computers are widely used and serve the same purpose as brain. The difference is that the computers can save thousands times more data than a brain can store. The invention of the computer was many years back from now but today the modernized computers are the Compaq computers. At that time the computers were very huge. The first computer that has the much resemblance with the today’s modernized computer was invented in early 1940s. However, before that people had the concepts about the computers.
The ancient computers were very he and one room was needed to make computers. Today there are hundreds of computers that are used at the homes and at various places as the personal computers. There will be very few houses where the computer may not be present in the Western world.
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