Digital Electronics - Digital Arithmetic Operations and Circuits

Exercise :: Digital Arithmetic Operations and Circuits - General Questions

11. 

The most commonly used system for representing signed binary numbers is the:

A. 2's-complement system.
B. 1's-complement system.
C. 10's-complement system.
D. sign-magnitude system.

Answer: Option A

Explanation:

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12. 

What is the major difference between half-adders and full-adders?

A. Nothing basically; full-adders are made up of two half-adders.
B. Full adders can handle double-digit numbers.
C. Full adders have a carry input capability.
D. Half adders can handle only single-digit numbers.

Answer: Option C

Explanation:

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13. 

The decimal value for E16 is:

A. 1210
B. 1310
C. 1410
D. 1510

Answer: Option C

Explanation:

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14. 

Fast-look-ahead carry circuits found in most 4-bit full-adder circuits:

A. determine sign and magnitude
B. reduce propagation delay
C. add a 1 to complemented inputs
D. increase ripple delay

Answer: Option B

Explanation:

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15. 

Add the following hex numbers: 011016 + 1001016

A. 1012016
B. 1002016
C. 1112016
D. 0012016

Answer: Option A

Explanation:

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