MIDN 4CL MARI, CARLOS JAY P.
MR. FROILAN D. MOBO, MBA, MSCS
WHAT IS A MICROPROCESSOR?
Microprocessor is a silicon ship that contains a CPU or Central Processing Unit. It carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of the system. Two typical components of a CPU are the arithmetic logic unit (ALU), which performs arithmetic and logical operations, and the control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary. 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.
EXAMPLES OF MICROPROCESSORS
* INTEL PENTIUM
Is a 32-bit microprocessor introduced by Intel in 1993. It contains 3.3 million transistors, nearly triple the number contained in its predecessor, the 80486 chip. Though still in production, the Pentium processor has been superseded by the Pentium Pro and Pentium II microprocessors. Since 1993, Intel has developed the Pentium III and more recently the Pentium 4 microprocessors.
* MOTOROLA MICROPRCESSOR
Motorola Inc. is one of the leading manufacturers of microprocessors. Until the early 1990s, Motorola microprocessors were used in all Apple Macintosh computers and in many workstations. Following the development of its 68040 chip... [continues]
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