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Draw truth table and logic diagram of Full Subtractor
written 9.4 years ago by gravatar for teamques10 teamques10 ★ 70k modified 3.8 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Mumbai University > ELECTRO > Sem 3 > Digital Circuits and Designs

Marks: 5M

Year: Dec 2014
digital circuits and design
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written 9.4 years ago by gravatar for teamques10 teamques10 ★ 70k

A full subtractor subtracts two bits A from B, along with previous borrow Bin. It gives two outputs, subtraction and borrow. The truth table for a full subtractor is shown below

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From the above truth table, we can draw the K-maps and minimize the expression for D and B0. Finally the logic diagram of a full subtractor is shown below:

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