Electronics and Communication Engineering - Digital Electronics

36. 

Logic analyser is

A. a multichannel oscilloscope
B. similar to logic pulser
C. similar to current tracer
D. none of the above

Answer: Option A

Explanation:

It is a multichannel oscilloscope.


37. 

The minimized version of logic circuit in the given figure is

A.
B.
C.
D.

Answer: Option A

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

A. AND gate
B. OR gate
C. NOR gate
D. NAND gate

Answer: Option C

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

A. 8 gates
B. 6 gates
C. 10 gates
D. 5 gates

Answer: Option A

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

A. 10 mV
B. 20 mV
C. 15 mV
D. 25 mV

Answer: Option A

Explanation:

Resolution = V or 10 mV.