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This article mainly deals with the microprocessor chip which is the computers brain This computer chip is responsible for the majority of the computers functions its commonly referred to as the Central Processing Unit CPU It receives and executes your instructions and determines if your computer understands software written for a Personal Computer PC or a Macintosh MAC The CPU chip size is small about half the size of a business card and just as small as your thumbnail Intel is the leading manufacturer of microprocessor for IBM PCs also other companies manufacture them also However Apple IBM and Motorola have combined to create a power chip designed to be used in IBM PCs and Macintosh computers However Intel microprocessors are as follows 8088 8086 80286 80386 80486 and the Pentium The prefix 80 is commonly dropped Then we look at the CPU package dealing with the electronic circuits This chip is made of silicon containing numerous tiny transistors with tiny wire protruding from it The chip is encase in black plastic and sits on the motherboard which contains all of the computers circuitry Microprocessors have all different kinds of internal processor speed commonly known as clock speed This represents the number of clock cycles a chip can produce per second and how quickly the CPU can execute commands The speed is measured in megahertz MHz for example 25MHz equals to 25 million clock cycles per second The CPU also contains the databus a wire across of it that moves the information Which is measured in bits smallest piece of information These chips are compared by the Intel Comparative Microprocessor Performance ICOMP They compare a number of industry standards to determine the power of different CPUs Nevertheless a breakthrough in the 486 series chips surfaced Intel offered the 486DX in 1989 better than 386 amore faster CPU with clock speeds up to 33MHz including 12 million transistors compared to the 386s and also offered a
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