FREE ALU 101 Functions Questions and Answers
What is the primary function of an Arithmetic Logic Unit (ALU) in a CPU?
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The ALU is a critical component of the CPU that handles arithmetic operations like addition and subtraction, as well as logical operations like AND, OR, and NOT.
In an ALU, how is the addition of binary numbers typically implemented?
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A full-adder is a digital circuit that computes the addition of binary numbers, including carry-in and carry-out.
What Boolean function does the ALU perform to check for equality between two binary numbers?
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The XNOR function outputs true (1) when both inputs are the same, effectively checking for equality between two binary numbers.
How does an ALU implement the subtraction of two binary numbers using Boolean algebra?
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Subtraction in binary can be implemented by adding the two’s complement (invert the bits and add one) of the second number to the first number.
In ALU design, what Boolean operation is used to clear a specific bit in a register?
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To clear a specific bit in a register, an AND operation with 0 is used on that bit, effectively setting it to 0.