Basic Concept

What is a Circuit?

• Open-loop through which electrons can pass

• Closed-loop through which Neutrons can pass

• Closed-loop through which electrons can pass

• None of the mentioned

Which characteristic of IC in Digital Circuits represents a function of the switching time of a particular transistor?

• Voltage Gain
• Input Impedance
• Current Leakage
• Propagation Delay

Which of the following digital logic circuits can be used to add more than 1 – bit simultaneously?

• Half adder
• Full adder
• Multiplexer
• Ripple – carry adder

What type of logic gate is represented by the figure given below?

• XOR

• XNOR

• NAND

• NOR

What is the logical expression for Y = A + A´B ?

• Y = A + A'
• Y = A · B
• Y = A + B
• Y = A · A' + B

What is the octal equivalent of (F3B1)₁₆ ?

• 171661.

• 175220
• 175214
• 175216

Minimum number of 2 input NOR Gates required to realize f = C + AB is?

• 5
• 4
• 2
• 3

Realize W = AB + CD + EF + GH using 2 input NAND gates.

• 6

• 7

• 8

• 9

Convert (312)₈ into decimal

• 150
• 256
• 202
• 175

De-Morgan's Law states that

• (A+B)' = A'*B

• (AB)' = A' + B

• (AB)' = A + B

• (AB)' = A' + B'