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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 21
31.
In an op-amp a virtual ground is a ground for
voltage only
current only
both voltage and current
neither voltage nor current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after SBI 0B7H?
12 H, 0
12 H, 1
DDH, 0
DDH, 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The Central Processing Unit (CPU) of the 16-processor system developed by hardware and software teams of C-DOT, Bangalore is configured around
Motorola 68020
Motorola 68040
Intel 80386
Intel 80486
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Figure shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displayed?
100
121
144
172
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
For NOR gate SR flip-flop, the 'no change' condition is
S = 0, R = 0
S = 1, R = 0
S = 0, R = 1
S = 1, R = 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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