![]() We need three control lines to identify any one of these operations. ![]() Also consider that the ALU is having four logical operations: OR, AND, NOT & EX-OR. ![]() Addition, subtraction, multiplication and division. So, with the help of three control lines, any one of these eight operations can be identified.Ĭonsider an ALU is having four arithmetic operations. Also to identify the any one of these two groups- arithmetic or logical, another control line is needed. To identify any one of these four logical operations or four arithmetic operations, two control lines are needed. ALU is having collection of two types of operations:Ĭonsider an ALU having 4 arithmetic operations and 4 logical operation. The basic operations are implemented in hardware level. ALU is responsible to perform the operation in the computer.
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