Digital electronics miscellaneous
- Consider the following statements:
For 3 input variables a, b, c; a Boolean function y = ab + bc + ca represents:
1. a 3-input majority gate
2. a 3-input minority gate
3. Carry output of a full adder
4. Product circuit for a, b and c
Which of the above statements are correct?
-
View Hint View Answer Discuss in Forum
NA
Correct Option: C
NA
- For the circuit shown in the following figure, I0 – I3 are inputs to the 4: 1 multiplexer, R (MSB) and P and Q are control bits. The output Z can be represented by—
-
View Hint View Answer Discuss in Forum
The given circuit
Z = + R + SP + + RSPQ + R + SP + RS (P + + Q)
or
Z = + R + SP + + RSPQ + PR + S + PRS + + QRS
From above K-map, we get
Z=P + S + PQS + RS + Q
Correct Option: A
The given circuit
Z = + R + SP + + RSPQ + R + SP + RS (P + + Q)
or
Z = + R + SP + + RSPQ + PR + S + PRS + + QRS
From above K-map, we get
Z=P + S + PQS + RS + Q
- With which decoder it is possible to obtain many code conversions?
-
View Hint View Answer Discuss in Forum
By using 4 line to 16 line decoder it is possible to obtain many code conversion
Correct Option: D
By using 4 line to 16 line decoder it is possible to obtain many code conversion
- Expression for Y (A, B, C) in figure, where A, B and C are Boolean variables is—
-
View Hint View Answer Discuss in Forum
The given circuit
From above circuit, we get
Y = A B. 1 + AB.C + A B.0 + AB. 0
or
Y = A B + ABC
or
Y = A (B + BC) = A (B+C) = AB + AC
Correct Option: C
The given circuit
From above circuit, we get
Y = A B. 1 + AB.C + A B.0 + AB. 0
or
Y = A B + ABC
or
Y = A (B + BC) = A (B+C) = AB + AC
- A full adder can be realized by using—
-
View Hint View Answer Discuss in Forum
A full adder can be realized by using two half-adders and one OR gate.
Correct Option: B
A full adder can be realized by using two half-adders and one OR gate.
