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How many basic binary subtraction operations are possible?(a) 1(b) 4(c) 3(d) 2I have been asked this question in exam.The doubt is from Controlled Inverter topic in division Arithmetic Circuits of Digital Circuits

Answer»

Correct option is (b) 4

Explanation: 4 basic BINARY subtraction OPERATIONS (0-0, 1-0, 0-1, 1-1) are possible.

0 – 0 = 0

0 – 1 = 1 ( BORROW 1)

1 – 0 = 1

1 – 1 = 0



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