Electronics Combinational Logic Circuits Questions and Answers
Electronics Combinational Logic Circuits questions with answers help students understand digital logic concepts like adders, multiplexers, decoders, and encoders. These aptitude questions and answers with explanations are commonly asked in exams like GATE, BARC, and ISRO. Combinational circuits form the foundation of digital electronics, where the output depends solely on the current inputs. Practicing aptitude questions with solutions PDF builds analytical skills and logical reasoning ability required for competitive and placement exams. For students pursuing electronics and communication engineering, mastering these concepts is essential for technical interviews and academic excellence.
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