MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The accumulator is an 8-bit register (can store 8-bit data) that is the part of the arithmetic and logical unit (ALU). After performing arithmetical or logical operations, the result is stored in accumulator. Accumulator is also defined as register A.

Detailed explanation-2: -The arithmetic/logic unit (ALU) of a processor performs integer arithmetic and logical operations. For example, one of its operations is to add two 32-bit integers. An integer used as input to an operation is called an operand. One operand for the ALU is always contained in a register.

Detailed explanation-3: -Register A is quite often called as an Accumulator. An accumulator is a register for short-term, intermediate storage of arithmetic and logic data in a computer’s CPU (Central Processing Unit). In an arithmetic operation involving two operands, one operand has tobe in this register.

Detailed explanation-4: -Typically, the ALU includes a register that it uses to store intermediate results of calculations. This register is known as the accumulator .

Detailed explanation-5: -The ALU then has two stable inputs: The Accumulator and the Temporary register. In effect, the temporary register holds the result of the memory operation for use by the ALU in the next processor cycle.