Virtual Labs

Computer Science and Engineering Computer Organisation and Architecture Lab Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Carry Look Ahead Adder

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

The time required for a pulse to decrease from 90 to 10 per cent of its maximum value is called

a: Propagation delay Explanation

Explanation

b: Rise time Explanation

Explanation

c: Decay time Explanation

Explanation

d: Binary level transition period Explanation

Explanation

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

a: Three bit parity checker Explanation

Explanation

b: Three point majority circuit Explanation

Explanation

c: Three bit counter Explanation

Explanation

d: Three bit comparator Explanation

Explanation

Odd parity of word can be conveniently tested by

a: AND gate Explanation

Explanation

b: OR gate Explanation

Explanation

c: XOR gate Explanation

Explanation

d: NOR gate Explanation

Explanation

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