Electronics and Communication Engineering - Digital Electronics
Exercise :: Digital Electronics - Section 8
| 26. |
The code used to reduce the error due to ambiguity in reading of a binary optical encoder is |
| A. |
Octal code | | B. |
Excess-3 code | | C. |
gray code | | D. |
BCD code |
Answer: Option C
Explanation:
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| 27. |
In a clocked latch, clock drives |
| A. |
R NAND gate | | B. |
S NAND gate | | C. |
both R and S NAND gates | | D. |
either R or S NAND gates |
Answer: Option C
Explanation:
|
| 28. |
Vectored interrupt is an interrupt that takes the program to a vector location. TRAP vectors to 0024 FI, RST 7.5 to 003 CH, RST 6.5 to 0034 H and |
| A. |
RST 5.5 | | B. |
RST 6.5 | | C. |
24 H to 48 H | | D. |
RST 5.5 to 002 CH |
Answer: Option D
Explanation:
|
| 29. |
ALU carries out |
| A. |
arithmetic operations | | B. |
logic operations | | C. |
both arithmetic and logic operations | | D. |
none of the above |
Answer: Option C
Explanation:
|
| 30. |
The SID data received is |
| A. |
LSB first | | B. |
LSB last | | C. |
1 | | D. |
none of these |
Answer: Option A
Explanation:
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