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Chapter 3 ARITHMETIC LOGIC CIRCUITS MCQs

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1. . A logic circuit which can add 2 bits is called:





2. . A half adder consists of:





3. . This adder cannot handle the input carry:





4. . The gate who performs the function of Sum in Half adder:





5. . The gate which performs the function of CO in Half adder:





6. . Boolean expression for CO in Half Adder is:





7. . A logic circuit which can add 3 bits at a time is called:





8. . A Full adder consists of:





9. . This adder can handle the input carry:





10. . If all the inputs of Full Adder are HIGH (1), then its outputs are:





11. . A logic circuit used to subtract the 2 bits is called:





12. . A half subtractor consists of:





13. . The gate who performs the function of Di in Half subtractor:





14. . A logic circuit used to subtract the 3 bits is called:





15. . A Full subtractor consists of:





16. . If all the inputs of Full Subtractor are HIGH (1), then its outputs are:





17. . A logic circuit which can perform both function of adder and subtractor is called:





18. . The answer obtained to subtract 10 from 11 is:





19. . A logic circuit which compares the magnitude of two binary numbers is called:





20. . Which gate can be used as basic comparator?





21. . The number of full adders in a 4-Bit parallel adder will be:





22. . For adding two 8-Bit binary number a parallel binary adder must contain full adders.





23. . An adder-subtractor can used as:





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