Electronics and Communication Engineering - Electronic Devices and Circuits

26.
9's complement of 1210 is
2110
8710
7810
7610
Answer: Option
Explanation:

99 - 12 = 87.


27.
The minterm designation for ABCD is
m8
m10
m14
m15
Answer: Option
Explanation:

ABCD = 1111 = m15 .


28.
Read the following statements
  1. The circuitry of ripple counter is more complex than that of synchronous counter.
  2. The maximum frequency of operation of ripple counter depends on the modulus of the counter.
  3. The maximum frequency of operation of synchronous counter does not depend on the modulus of the counter.
Which of the above statements are correct?
1 only
1, 2
1, 2, 3
2, 3
Answer: Option
Explanation:

Circuitry of ripple counter is simpler than that of synchronous counter.


29.
The minterm designation for ABCD is
m11
m13
m15
m16
Answer: Option
Explanation:

ABCD = 1111 = m15 .


30.
The logic circuit of the given figure is equivalent to
Answer: Option
Explanation:

In the given figure

.