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Microprocessor Fundamentals - Technical MCQs

Q1:

The circuits in the 8085A that provide the arithmetic and logic functions are called the:

A CPU

B ALU

C I/O

D none of the above

ANS:B - ALU

ALU is the right answer.

Because All the arithmetic and logical operation like add, sub, increment by 1, decrements by 1 and the logical operation like logical AND, logical OR, logical EX-OR, logical EX-NOR, complement, rotate right and rotate left can be performed by the ALU operation.