Digital Principles and Computer Organization: Chapter 4: Combinational Circuits
Parallel Subtractor
Question: Draw and explain 4-bit parallel subtractor.
Parallel Subtractor
•
The subtraction of binary numbers can be done most conveniently by means of
complements. Remember that the subtraction A–B can be done by taking the 2's
complement of B and adding it to A. The 2's complement can be obtained by taking the 1's complement and adding one to
the least significant pair of bits. The 1's complement can be implemented with
inverters and a one can be added to the sum through the input carry, as shown
in Fig. 4.6.1.
Review Question
1. Draw and explain 4–bit
parallel subtractor.
Digital Principles and Computer Organization: Chapter 4: Combinational Circuits : Tag: : - Parallel Subtractor
Digital Principles and Computer Organization: Chapter 4: Combinational Circuits
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