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Computer Science · Oct / Nov 2024 · Paper 12 · Question 6

0478

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The table contains names and descriptions of components in a central processing unit (CPU). Complete the table by giving the missing component names and descriptions. Component name Description sends signals to manage the flow of data through the CPU program counter stores the address of the data that is about to be fetched from random access memory (RAM) into the CPU transmits data between the RAM and the CPU accumulator stores an instruction when it is being decoded [6]

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Components

Control unit // CU
Memory address register // MAR
Data bus
Current instruction register // CIR

Descriptions

(Program counter) Stores the address of the next instruction to be fetched
(Accumulator) Stores the interim result for a calculation

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