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6. DIGITAL ARITHMETIC OPERATIONS AND CIRCUITS.pdf - 1. For...

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1. For a 4-bit parallel adder, if the carry-in is connected to a logicalHIGH, the result is:10111001×0011×0111×1010A.the same as if the carry-in is tied LOW since the least significantcarry-in is ignored.B.that carry-out will always be HIGH.C.a one will be added to the final result.D.the carry-out is ignored.Answer:OptionC2. What is the first thing you will need if you are going to use amacrofunction?011001111001C3. Perform subtraction on each of the following binary numbers bytaking the two's-complement of the number being subtracted andthen adding it to the first number.01001011000001100111OptionB4. Solving11 + (2) will yield which two's-complement answer?A.1110 1101B.1111 1001C5. Multiply the following binary numbers.101010111001×0011×0111×10101011101010101010C6. Add the following BCD numbers.0110011110010001000101110111Answer:OptionD7. Add the following hexadecimal numbers.3C14+25+28+DC3B118117C8. Solve this BCD problem: 0100 + 0110 =A9. What are constants in VHDL code?
B.Fixed variables used in functionsC.Fixed number typesdetermine sign and magnitudeB.reduce propagation delayC.add a 1 to complemented inputsD.increase ripple delayA10. The 2's-complement system is to be used to add the signed binarynumbers 11110010 and 11110011. Determine, in decimal, the signand value of each number and their sum.27C.11 and16,D.27 and13,Answer:Option2740B11. The most commonly used system for representing signed binarynumbers is the:A.2's-complement system.B.1's-complement system.C.10's-complement system.D.sign-magnitude system.Answer:OptionA12. What is the major difference between half-adders and full-adders?B.Full adders can handle double-digit numbers.C.Full adders have a carry input capability.D.Half adders can handle only single-digit numbers.Answer:OptionC13. The decimal value for E16is:C14. Fast-look-ahead carry circuits found in most 4-bit full-addercircuits:A.determine sign and magnitudeB.reduce propagation delayC.add a 1 to complemented inputsD.increase ripple delayB

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Term
Fall
Professor
NoProfessor
Tags
Computer Architecture, Binary numeral system, Binary coded decimal

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