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Engineering
Computer Information System
COMPUTERS
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Computer Information System
9th
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8 Terms
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Accumulator \[AC\]
Stores the results of calculations
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Instruction Register \[IR\]
Stores address in RAM of instruction to be processed
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Memory Address Register \[MAR\]
Stores address in RAM of data TO BE processed
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Stores the data being processed
Memory Data Register \[MDR\]
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Program Counter \[PC\]
Stores address in RAM of next instruction
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Arithmetic Logic Unit \[ALU\]
Core of the CPU, made of logic circuits to perform logic and arithmetic operations
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Registers
parts of the CPU which can store data
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directs operations, sends out signals to control how data moves around the CPU; it manages the clock
Control Unit