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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 5
36.
Logic analyser is
a multichannel oscilloscope
similar to logic pulser
similar to current tracer
none of the above
Answer: Option
Explanation:

It is a multichannel oscilloscope.

37.
The minimized version of logic circuit in the given figure is
Answer: Option
Explanation:

The Boolean equation is The circuit in the given figure gives .

38.
In the given figure shows a negative logic AND gate. If positive logic is used this gate is equivalent to
AND gate
OR gate
NOR gate
NAND gate
Answer: Option
Explanation:

Y = A B = A + B .

39.
The function Y = A B C + AB C + A B C + A BC is to be realized using discrete gates. The inputs available are A, B, C. We need a total of
8 gates
6 gates
10 gates
5 gates
Answer: Option
Explanation:

Three NOT gates, four AND gates and one OR gate, i.e., total of 8 gates.

40.
A 10 bit D/A converter gives a maximum output of 10.23 V. The resolution is
10 mV
20 mV
15 mV
25 mV
Answer: Option
Explanation:

Resolution = V or 10 mV.

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