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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 17
11.
A two-input OR gate is designed for positive logic. However, it is operated with negative logic. The resulting logic operation will then be
OR
AND
NOR
EX-OR
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
A clock signal driving a 6-bit ring counter has a frequency of 1 MHz. How long is each timing bit high?
1 ms
2 ms
3 ms
6 ms
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A twisted ring counter consisting of 4 FF will have
4 states
8 states
24 states
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.

Assertion (A): In a serial in-serial out shift register, access is available only to the left most or right most flip flops

Reason (R): If the output of a shift register is feedback to serial input it can be used as a ring counter.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
IC counters are
synchronous only
asynchronous only
both synchronous and asynchronous
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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