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ECE :: Digital Electronics

  1. An instruction used to set the carry flag in a computer can be classified as

  2. A.
    data transfer
    B.
    arithmetic
    C.
    Logical
    D.
    program control

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  3. In the assembler, which one of the following is required for variable name in symbol table?

  4. A.
    Addresses
    B.
    Values
    C.
    Registers
    D.
    Storage

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  5. A monostable multivibrator has

  6. A.
    no stable state
    B.
    one stable state
    C.
    two stable state
    D.
    none of the above

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  7. Which memory does not require programming equipment?

  8. A.
    RAM
    B.
    EPROM
    C.
    EEPROM
    D.
    UVPROM

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  9. The 8085 microprocessor is interrupted while executing MOV instruction at location 0210 H. What is the location at which contents of register D are stored

  10. A.
    054 CH
    B.
    054 DH
    C.
    054 EH
    D.
    054 FH

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  11. NAND and NOR gates are universal gates.

  12. A.
    True
    B.
    False

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  13. The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

  14. A.
    two flip-flop & 2 x 4 decoder are needed
    B.
    four flip-flop & 2 x 4 decoder are needed
    C.
    two flip-flop & 3 x 9 decoder are needed
    D.
    four flip-flop & 3 x 9 decoder are needed

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  15. A hexadecimal odometer displays F52F. The next reading will be

  16. A.
    E 52 F
    B.
    E 52 E
    C.
    E 53 F
    D.
    F 53 O

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  17. Which of them has 10 inputs and 4 outputs?

  18. A.
    Decimal to BCD encoder
    B.
    BCD to decimal decoder
    C.
    Octal to binary encoder
    D.
    All encoders

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  19. The binary number 0.10110111101 is equal to hexadecimal number

  20. A.
    B3A
    B.
    B5A
    C.
    B7A
    D.
    BA7

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