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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 19
6.
Consider the Boolean expression X = ABCD + ABCD + ABCD + ACBD The simplified form of X is
C + D
BC
CD
B
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
In floating point representation the number of bits in exponent is
8
7
6
5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
In 8085 microprocessor, an active low signal INTA is not needed from up service which of the following interrupt request?
TRAP
INTR
RST 7.5
RST 5.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Consider the following statements:
  1. In the 2's complement representation, negative numbers are stored in sign magnitude form.
  2. Taking 2's complement is equivalent to sign change.
  3. In a 4 bit complement representation of a binary number A.
  4. In the 2's complement representation the most significant bit (MSB) is zero for a positive number.
Of these, the only true statements are
(I) and (III)
(I) and (IV)
(II) and (III)
(II) and (IV)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Without any addition circuitry, an 8:1 MUX can be used to obtain.
some but not all Boolean functions of 3 variables
all functions of 3 variables but none of 4 variables
all functions of 3 variables and some but not all of 4 variables
all functions of 4 variables
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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