Electronics and Communication Engineering - Digital Electronics

1.
The logic operation that will selectively clear bits in register A in those positions where these are 1 's in the bits of register B is given by
A ← A + B
A ← AB
A ← A + B
A ← AB
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
The 2's complement representation of the decimal number -4 is
0100
1100
1011
1010
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
The following program starts at location 0100H
L X ISP, 00FF - the content if accumulator
LXIH, 0701 - when the program counter
MVI A, 20 H - reaches 0109 H is
S ∪ BM
20 H
02 H
00 H
FFH
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
In 8085 microprocessor, what is the length of PC (program counter)?
6 bits
8 bit
12 bits
16 bits
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
In decimal system the base of radix is
0
1
10
e
Answer: Option
Explanation:
No answer description is available. Let's discuss.