Electronics and Communication Engineering - Digital Electronics
Exercise :: Digital Electronics - Section 16
| 21. |
A universal shift register can shift left or right. |
Answer: Option A
Explanation:
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| 22. |
The circuit given below is a
 |
| A. |
counter | | B. |
digital to analog converter | | C. |
two-bit series-to-parallel converter | | D. |
analog-to digital converter |
Answer: Option C
Explanation:
|
| 23. |
The high voltage level of a digital signal in positive logic is |
Answer: Option A
Explanation:
|
| 24. |
A 7477 decoder drives |
| A. |
seven-segment display | | B. |
nickel tape | | C. |
relays | | D. |
diode matrix |
Answer: Option A
Explanation:
|
| 25. |
BCD numbers are useful whenever |
| A. |
binary to hexadecimal conversion is desired | | B. |
binary to BCD conversion is desired | | C. |
decimal information is transferred into or out of a digital system | | D. |
none of the above |
Answer: Option C
Explanation:
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