Discussion
The logic operation (OR, AND, NOR or NAND) carried out by following circuit is
Answer: C
The circuit performs the OR operation.
The NOR gate gives \(\overline{A + B}\). A NAND gate with both inputs tied together acts as an inverter, since \(\overline{X \cdot X} = \overline{X}\). So
\[ Y = \overline{\overline{A + B}} = A + B \]
which is OR. NOR would be the output of the first gate alone, without the inverting NAND. AND and NAND would need the inputs to be combined by an AND-type gate first, but here they enter a NOR gate.
No comment is present. Be the first to comment.
Loading…
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