MCQ IN COMPUTER SCIENCE & ENGINEERING

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COMPUTER SCIENCE AND ENGINEERING

COMPUTER ARCHITECTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This DOESN’T happen during the Fetch part of the cycle
A
Address Bus is used
B
Program Counter increments by one
C
Arithmetic operations are performed
D
Main Memory is addressed
Explanation: 

Detailed explanation-1: -The arithmetic/logic unit (ALU) contains the electronic circuitry that executes all arithmetic and logical operations.

Detailed explanation-2: -In computing, the instruction register (IR) or current instruction register (CIR) is the part of a CPU’s control unit that holds the instruction currently being executed or decoded.

Detailed explanation-3: -The CPU fetches the instructions one at a time from the main memory into the registers. One register is the program counter (pc). The pc holds the memory address of the next instruction to be fetched from main memory. The CPU decodes the instruction.

Detailed explanation-4: -The central processing unit (CPU) is the core of a computer system and consists of the arithmetic logic unit (ALU) and the control unit.

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