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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Combinational Logic Design

Choose difficulty:

Beginner

Intermediate

Advanced

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

a: Nothing basically; full-adders are made up of two half-adders Explanation

Explanation

b: Full-adders can handle double digit numbers Explanation

Explanation

c: Full-adders have a carry input capability Explanation

Explanation

d: Half-adders can only handle single digit numbers Explanation

Explanation

The MOST commonly used system for representing signed binary numbers is the

a: 2's-complement system Explanation

Explanation

b: 1's-complement system Explanation

Explanation

c: 10's-complement system Explanation

Explanation

d: Sign-magnitude system Explanation

Explanation

One way to make a four-bit adder perform subtraction is by

a: Inverting the output Explanation

Explanation

b: Inverting the carry-in Explanation

Explanation

c: Inverting the B inputs Explanation

Explanation

d: Invert both carry-in and B Explanation

Explanation

Which one of the following will give the sum of full adders as output?

a: Three bit parity checke Explanation

Explanation

b: Three point majority circuit Explanation

Explanation

c: Three bit counter Explanation

Explanation

d: Three bit comparator Explanation

Explanation

The number of full and half-adders required to add 16-bit numbers is

a: 1 half-adder, 5 full-adders Explanation

Explanation

b: 4 half-adders, 12 full-adders Explanation

Explanation

c: 8 half-adders, 8 full-adders Explanation

Explanation

d: 16 half-adders, 0 full-adders Explanation

Explanation

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