Exercise: Digital Electronics

Questions for: Digital Electronics

The dual of A + [B + (AC)] + D is
A:
A + [(B (A + C))] + D
B:
A [B + AC] D
C:
A + [B (A + C)] D
D:
A [B (A + C)] D
Answer: D

In taking dual OR is replaced by AND and vice versa.

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For the K map of the given figure, the simplified Boolean expression is
A:
A C + A D + ABC
B:
A B D + BC
C:
A C D + AC
D:
A C D + AC + BC
Answer: A

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The minimum number of NAND gates required to implement the Boolean function A +AB + ABC is equal to
A:
0
B:
1
C:
4
D:
7
Answer: A

A + AB +A B C = A + AB ( 1 + C) = A + AB = A(1 + B) = A.

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What will be minimum conversion rate in 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).
A:
9000
B:
9259
C:
1000
D:
1000
Answer: B

Minimum conversion rate .

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Which of these are two state devices?
A:
Lamp
B:
Punched card
C:
Magnetic tape
D:
All of the above
Answer: D

Each has 2 states.

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