ICT 202 Lecture 13: Week 5: Hardware: CPUs
5 Feb 2019
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Document Summary
The processor, also called the central processing unit (cpu) interprets and carries out the basic instructions that operate a computer. A control unit that interprets each instruction issues by a program and initiates the appropriate action to carry out the instruction. Does not execute a program, but rather directs other parts of the computer to do so. An arithmetic logic unit (alu) performs arithmetic, comparison, and other logic based operations. Registers are very small, high speed memory that temporarily hold data and instructions. A system clock, which generated regular electronic pulses that set the operating pace of components in the system (each tick is a clock cycle ) The pace of the system clock is called the clock speed, and is usually measured in gigahertz (ghz) Processors work according to a clock that beats a set number of times per second, usually measured in gigahertz.
