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1. What general categories of functions are specified by computer instructions?
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LaoThe basic function preformed by computer is execution of program Which consists of a set of instructions stored in memory, the processor dose the actual work by executing instructions specified in the program �instruction prossing consists of 2 steps : The processor read(fetches) instructions from memory one at a time and Executes each instruction .
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The processor interprets the instruction and performs the required action. In general, these actions fall into four categories.
Processor-Memory
Data may be transferred from processor to memory or from memory to processor.
Processor-I/O
Data may be transferred to or from a peripheral device by transferring between the processor and an I/O module.
Data Processing
The processor may perform some arithmetic or logic operation on data.
Control
An instruction may specify that the sequence of execution be altered.
What general categories of functions are specified by computer instructions?
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