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Home ‣ Digital Electronics ‣ Code Converters and Multiplexers Comments
- Question
How many inputs are required for a 1-of-10 BCD decoder?
Options- A. 4
- B. 8
- C. 10
- D. 1
- Correct Answer
- 4
- 1. The primary use for Gray code is:
Options- A. coded representation of a shaft's mechanical position
- B. turning on/off software switches
- C. to represent the correct ASCII code to indicate the angular position of a shaft on rotating machinery
- D. to convert the angular position of a shaft on rotating machinery into hexadecimal code Discuss
- 2. A microcontroller differs from a microprocessor in that it has several ________ ports and ________ built into its architecture, making it better suited for ________ applications.
Options- A. communication, PROMs, control
- B. parallel, logic gates, processing
- C. input/output, memory, control
- D. data, memory, decoding Discuss
- 3. When two or more inputs are active simultaneously, the process is called:
Options- A. first-in, first-out processing
- B. priority encoding
- C. ripple blanking
- D. first-in, first-out processing or priority encoding Discuss
- 4. In a BCD-to-seven-segment converter, why must a code converter be utilized?
Options- A. to convert the 4-bit BCD into 7-bit code
- B. to convert the 4-bit BCD into 10-bit code
- C. to convert the 4-bit BCD into Gray code
- D. No conversion is necessary. Discuss
- 5. What control signals may be necessary to operate a 1-line-to-16 line decoder?
Options- A. flasher circuit control signal
- B. a LOW on all gate enable inputs
- C. input from a hexadecimal counter
- D. a HIGH on all gate enable circuits Discuss
- 6. What is the function of an enable input on a multiplexer chip?
Options- A. to apply Vcc
- B. to connect ground
- C. to active the entire chip
- D. to active one half of the chip Discuss
- 7. Why is a demultiplexer called a data distributor?
Options- A. The input will be distributed to one of the outputs.
- B. One of the inputs will be selected for the output.
- C. The output will be distributed to one of the inputs. Discuss
- 8. A binary code that progresses such that only one bit changes between two successive codes is:
Options- A. nine's-complement code
- B. 8421 code
- C. excess-3 code
- D. Gray code Discuss
- 9. A truth table with output columns numbered 0?15 may be for which type of decoder IC?
Options- A. hexadecimal 1-of-16
- B. dual octal outputs
- C. binary-to-hexadecimal
- D. hexadecimal-to-binary Discuss
- 10. In a Gray code, each number is 3 greater than the binary representation of that number.
Options- A. True
- B. False Discuss
Code Converters and Multiplexers problems
Search Results
Correct Answer: coded representation of a shaft's mechanical position
Correct Answer: input/output, memory, control
Correct Answer: priority encoding
Correct Answer: to convert the 4-bit BCD into 7-bit code
Correct Answer: a LOW on all gate enable inputs
Correct Answer: to active the entire chip
Correct Answer: The input will be distributed to one of the outputs.
Correct Answer: Gray code
Correct Answer: hexadecimal 1-of-16
Correct Answer: False
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