Electronics Combinational Logic Circuits Questions and Answers
Electronics Combinational Logic Circuits
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29 questions
1. Most demultiplexers facilitate which of the following?
- decimal to hexadecimal
- single input, multiple outputs
- ac to dc
- odd parity to even parity
2. One application of a digital multiplexer is to facilitate:
- code conversion
- parity checking
- parallel-to-serial data conversion
- data generation
3. A multiplexed display:
- accepts data inputs from one line and passes this data to multiple output lines
- uses one display to present two or more pieces of information
- accepts data inputs from multiple lines and passes this data to multiple output lines
- accepts data inputs from several lines and multiplexes this input data to four BCD lines
4. When two or more inputs are active simultaneously, the process is called:
- first-in, first-out processing
- priority encoding
- ripple blanking
- priority decoding
5. Which type of decoder will select one of sixteen outputs, depending on the 4-bit binary input value?
- hexadecimal
- dual octal outputs
- binary-to-hexadecimal
- hexadecimal-to-binary
6. A circuit that responds to a specific set of signals to produce a related digital signal output is called a(n):
- BCD matrix
- display driver
- encoder
- decoder
7. Which digital system translates coded characters into a more intelligible form?
- encoder
- display
- counter
- decoder
8. A basic multiplexer principle can be demonstrated through the use of a:
- single-pole relay
- DPDT switch
- rotary switch
- linear stepper
9. In a BCD-to-seven-segment converter, why must a code converter be utilized?
- No conversion is necessary.
- to convert the 4-bit BCD into gray code
- to convert the 4-bit BCD into 10-bit code
- to convert the 4-bit BCD into 7-bit code
10. What is a combinational circuit?
- Circuit with memory elements
- Circuit whose output depends only on current inputs
- Circuit with feedback
- Circuit with clock input