MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER ARCHITECTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Define ALU
A
Perform anything that we ask the computer to do
B
Performs basic arithmetic, logical, or I/O operations
C
Turns off the computer
D
Does not perform anything
Explanation: 

Detailed explanation-1: -The ALU performs simple addition, subtraction, multiplication, division, and logic operations, such as OR and AND. The memory stores the program’s instructions and data. The control unit fetches data and instructions from memory and… In digital computer: Functional elements.

Detailed explanation-2: -In general, the ALU includes storage places for input operands, operands that are being added, the accumulated result (stored in an accumulator) and shifted results. The flow of bits and the operations performed on them in the subunits of the ALU are controlled by gated circuits.

Detailed explanation-3: -ALUs perform arithmetic operations such as addition, subtraction, and multiplication, and logical operations such as NOR, NOT, AND, and OR. The arithmetic operation of division is typically done by another component of the CPU called a Floating-Point Unit, or FPU.

Detailed explanation-4: -The arithmetic logic unit is that part of the CPU that handles all the calculations the CPU may need. Most of these operations are logical in nature. Depending on how the ALU is designed, it can make the CPU more powerful, but it also consumes more energy and creates more heat.

Detailed explanation-5: -An arithmetic logic unit (ALU) is a key component of a computer’s central processor unit. The ALU performs all arithmetic and logic operations that must be performed on instruction words. The ALU is split into two parts in some microprocessor architectures: the AU and the LU.

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