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ECE :: Digital Electronics

  1. Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?

  2. A.

     Two’s complement only

    B.

     Sign and magnitude and one’s complement only

    C.

     Two’s complement and one’s complement only

    D.

     All three representations


  3. Excess-3 code is known as

  4. A.

     Weighted code

    B.

     Cyclic redundancy code

    C.

     Self-complementing code

    D.

     Algebraic code


  5. The number 10000 would appear just immediately after

  6. A.

     FFFF (hex)

    B.

     1111 (binary)

    C.

     7777 (octal)

    D.

     All of the above


  7. The only function of NOT gate is to ___________.

  8. A.

     Stop signal

    B.

     Invert input signal

    C.

     Act as a universal gate

    D.

     None of the above


  9. Which of the following gate is a two-level logic gate

  10. A.

     OR gate

    B.

     NAND gate

    C.

     EXCLUSIVE OR gate

    D.

     NOT gate


  11. When an input signal 1 is applied to a NOT gate, the output is ___________.

  12. A.

     0

    B.

     1

    C.

     Either 0 & 1

    D.

     None of the above


  13. Storage of 1 KB means the following number of bytes

  14. A.

     1000

    B.

     964

    C.

     1024

    D.

     1064