A half-adder circuit would normally be used each time a carry input is required in an adder circuit.

More Questions from Digital Arithmetic Operations and Circuits

• The inputs of a full adder are labeled A1, B1, and Cin.
• When the 2's-complement system is used, the number to be subtracted is changed to its 2's complement and then added to the minuend.
• Binary multiplication is like decimal multiplication except you deal only with 1s and 0s.
• Full adder results are typically stored in registers.
• The representation of –110 in eight-bit two's-complement notation is 11110111.
• The two's-complement method is used in computer systems that perform arithmetic.
• An ALU is a multipurpose device capable of providing several different logic operations.
• Larger number capacities may be obtained from 2-bit adders by paralleling them.
• A macrofunction is a self-contained description of a logic circuit with all of its inputs, outputs, and operational characteristics defined.
• A full adder has a carry-in.

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