Digital Electronics - Digital Arithmetic Operations and Circuits

Exercise :: Digital Arithmetic Operations and Circuits - General Questions

16. 

The binary subtraction 0 – 0 =

A. difference = 0
borrow = 0
B. difference = 1
borrow = 0
C. difference = 1
borrow = 1
D. difference = 0
borrow = 1

Answer: Option A

Explanation:

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17. 

Convert each of the decimal numbers to 8-bit two's-complement form and then perform subtraction by taking the two's-complement and adding.

A. 0001  0011
B. 0000  1110
C. 0010  1110
D. 1110  0000

Answer: Option B

Explanation:

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18. 

Adding in binary, a decimal 26 + 27 will produce a sum of:

A. 111010
B. 110110
C. 110101
D. 101011

Answer: Option C

Explanation:

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19. 

Convert each of the following signed binary numbers (two's-complement) to a signed decimal number.
00000101        11111100        11111000

A. –5    +4    +8
B. +5    –4    –8
C. –5    +252    +248
D. +5    –252    –248

Answer: Option B

Explanation:

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20. 

How many basic binary subtraction operations are possible?

A. 4
B. 3
C. 2
D. 1

Answer: Option A

Explanation:

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