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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

  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

  5. A monostable multivibrator has

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

  7. Which memory does not require programming equipment?

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

  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

  11. NAND and NOR gates are universal gates.

  12. A.
    True
    B.
    False

  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

  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

  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

  19. The binary number 0.10110111101 is equal to hexadecimal number

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