Discussion
Home ‣ Digital Electronics ‣ Code Converters and Multiplexers Comments
- Question
How many possible outputs would a decoder have with a 6-bit binary input?
Options- A. 16
- B. 32
- C. 64
- D. 128
- Correct Answer
- 64
- 1. How many 74184 BCD-to-binary converters would be required to convert two complete BCD digits to a binary number?
Options- A. 8
- B. 4
- C. 2
- D. 1 Discuss
- 2. How can the active condition (HIGH or LOW) or the decoder output be determined from the logic symbol?
Options- A. A bubble indicates active-HIGH.
- B. A bubble indicates active-LOW.
- C. A square indicates active-HIGH.
- D. A square indicates active-LOW. Discuss
- 3. How many outputs are on a BCD decoder?
Options- A. 4
- B. 16
- C. 8
- D. 10 Discuss
- 4. Most demultiplexers facilitate which type of conversion?
Options- A. decimal-to-hexadecimal
- B. single input, multiple outputs
- C. ac to dc
- D. odd parity to even parity Discuss
- 5. What is the status of the inputs S0, S1, and S2 of the 74151 eight-line multiplexer in order for the output Y to be a copy of input I5?
Options- A. S0 = 0, S1 = 1, S2 = 0
- B. S0 = 0, S1 = 0, S2 = 1
- C. S0 = 1, S1 = 1, S2 = 0
- D. S0 = 1, S1 = 0, S2 = 1 Discuss
- 6. One application of a digital multiplexer is to facilitate:
Options- A. data generation
- B. serial-to-parallel conversion
- C. parity checking
- D. data selector Discuss
- 7. Which digital system translates coded characters into a more useful form?
Options- A. encoder
- B. display
- C. counter
- D. decoder Discuss
- 8. A basic multiplexer principle can be demonstrated through the use of a:
Options- A. single-pole relay
- B. DPDT switch
- C. rotary switch
- D. linear stepper Discuss
- 9. Why can a CMOS IC be used as both a multiplexer and a demultiplexer?
Options- A. It cannot be used as both.
- B. CMOS uses bidirectional switches. Discuss
- 10. From the following list of input conditions, determine the state of the five output leads on a 74148 octal-to-binary encoder.
I0 = 1 I3 = 1 I6 = 1 I1 = 1 I4 = 0 I7 = 1 I2 = 1 I5 = 1 EI = 0
Options- A. GS = L, A0 = L, A1 = L, A2 = H, EO = H
- B. GS = L, A0 = H, A1 = L, A2 = L, EO = H
- C. GS = L, A0 = L, A1 = H, A2 = L, EO = H
- D. GS = L, A0 = H, A1 = H, A2 = L, EO = H Discuss
Code Converters and Multiplexers problems
Search Results
Correct Answer: 2
Correct Answer: A bubble indicates active-LOW.
Correct Answer: 10
Correct Answer: single input, multiple outputs
Correct Answer: S0 = 1, S1 = 0, S2 = 1
Correct Answer: data selector
Correct Answer: decoder
Correct Answer: rotary switch
Correct Answer: CMOS uses bidirectional switches.
Correct Answer: GS = L, A0 = H, A1 = H, A2 = L, EO = H
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