Electronics MCQ Question and Answer
Electronics MCQ Question and Answer
21. A NAND gate is called a universal logic element because
- it is used by everybody
- any logic function can be realized by NAND gates alone
- all the minization techniques are applicable for optimum NAND gate realization
- many digital computers use NAND gates.
22. Digital computers are more widely used as compared to analog computers, because they are
- less expensive
- always more accurate and faster
- useful over wider ranges of problem types
- easier to maintain.
23. Most of the digital computers do not have floating point hardware because
- floating point hardware is costly
- it is slower than software
- it is not possible to perform floating point addition by hardware
- of no specific reason.
24. The number 1000 would appear just immediately after
- FFFF (hex)
- 1111 (binary)
- 7777 (octal)
- All of the above.
26. The number of Boolean functions that can be generated by n variables is equal to
- 2n
- 22 n
- 2n-1
- — 2n
27. 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?
- Two’s complement only
- Sign and magnitude and one’s complement only
- Two’s complement and one’s complement only
- All three representations.
28. A hexadecimal odometer displays F 52 F. The next reading will be
- F52E
- G52F
- F53F
- F53O.
29. Positive logic in a logic circuit is one in which
- logic 0 and 1 are represented by 0 and positive voltage respectively
- logic 0 and, -1 are represented by negative and positive voltages respectively
- logic 0 voltage level is higher than logic 1 voltage level
- logic 0 voltage level is lower than logic 1 voltage level.
30. Which of the following gate is a two-level logic gate
- OR gate
- NAND gate
- EXCLUSIVE OR gate
- NOT gate.