Explore topic-wise MCQs in Boolean Algebra and Logic Simplification .

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Boolean Algebra and Logic Simplification knowledge and support exam preparation. Choose a topic below to get started.

1.

A breadboard-circuit design using a BCD-to-decimal decoder has a problem wherein the operation of the system is erratic. The technician uses his scope to examine the waveforms throughout the system and doesn't really see any problems. While he&

A. The decoder is thermally intermittent; replace it.
B. Glitches are probably the culprit; strobe the decoder.
C. The decoder is thermally intermittent and must be replaced; or there is probably a bad connection on the wire wrap protoboard, and the wiring must be rechecke
D. There is probably a bad connection on the wire wrap protoboard; recheck the wiring
Answer» C. The decoder is thermally intermittent and must be replaced; or there is probably a bad connection on the wire wrap protoboard, and the wiring must be rechecke
Discussion
2.

The circuit in Figure 9-8 is defective; data is not appearing on the output lines. A check with the scope shows data pulses on the serial data line and multiplex control lines, S0–S2; no parity error is indicated. A further check with a logic probe indicates that V cc and ground appear to be present. What might be wrong with the circuit?

A. The demultiplexer may be bad.
B. The parity checker is defective.
C. The parity generator may be bad.
D. The parity checker is defective, or the parity generator may be bad.
Answer» B. The parity checker is defective.
Discussion