Chapter 4 COMBINATIONAL LOGIC AND DATA PROCESSING CIRCUITS MCQs

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1. . A combinational logic circuit consists of:





2. . A combinational circuit which accepts the binary information from several input lines or sources and sends the data on a single output line:





3. . Multiplexer is also called:





4. . Multiplexer has:





5. . The number of select lines in 8 to 1 line multiplexer are:





6. . De-Mux means:





7. . De-Mux is also called:





8. . Which IC is used for 1-to-16-line De-Mux?





9. . This logic gate is used while making decoder circuit:





10. . BCD decoder is also called:





11. . 7445 IC is a:





12. . 7-Segment display consists of:





13. . A single 7-Segment display displays the decimal digits from:





14. . Which IC is used to drive the 7-Segment display?





15. . A logic circuit which converts decimal into binary:





16. . 74LS147 is an encoder:





17. . Output of encoder is:





18. . Input of decoder is:





19. . When all seven segments of a display are energized, the number shown will be:





20. . 74LS154 Demultiplexer has data outputs:





21. . 7-segment display are used in:





22. . If active low output is required in BCD to decimal decoder, which gates are used for decoding purpose?





23. . Seven segment displays in which all the anodes of LEDs are common is called:





24. . IC 74LS46 drives the 7-segment display:





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