Q. All the arithmetic and logical operations in a computer are done by:
Answer: ALU
Notes: An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. Typically, the ALU has direct input and output access to the processor controller, main memory (random access memory or RAM in a personal computer) and input/output devices. It represents the fundamental building block of the central processing unit (CPU) of a computer.

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