Discussion
Which of the following circuit come under the class of combinational logic circuits ?
I. Full Adder
II. Full Subtractor
III. Counter
IV. Multiplexer
Answer: B
A combinational circuit has outputs that depend only on the present inputs, with no memory. The full adder, the full subtractor and the multiplexer are all built from gates alone, and their outputs follow their inputs at once, so statements I, II and IV are correct. A counter is a sequential circuit, since it has flip-flops that remember its present state and the next state depends on the earlier count, so statement III is wrong. The options that include III are therefore wrong, and the option with only I and II leaves out the multiplexer. The answer is I, II and IV.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development