Logic functions and Minimization

Question 91

The Boolean expression ( A + C\')(B\'+ C\') simplifies to

• C\' + AB\'
• C\' (A\' + B)
• B\'C\' + AB\'
• None of these.

Question 92

In the expression A\'(A\' + B\') by writing the first term A as A + 0, the expression is best simplified as

• A + AB
• AB
• A\'
• A + B

Question 93

The output Y of the given circuit

• 1
• 0
• X
• X\'

Question 94

Which of the following is not a valid rule of XOR?

• 0 XOR 0 = 0
• 1 XOR 1 = 1
• 1 XOR 0 = 1
• B XOR B = 0

Question 95

The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called:

• Strobing
• Amplification
• Conditioning
• Quantization

Question 96

The Boolean expression Y = (A + B\' + A\'B)C\' is given by

• AC\'
• BC\'
• C\'
• AB

Question 97

The circuit shown in the following figure realizes the function

• (( A + B )\' +C ) ( D\'E\' )
• (( A + B )\' + C ) ( DE\' )
• ( A + ( B + C )\' ) ( D\'E )
• ( A + B + C\' ) ( D\'E\' )

Question 98

The output 0 and 1 level for TTL Logic family is approximately

• 0.1 and 5V
• 0.6 and 3.5 V
• 0.9 and 1.75 V
• -1.75 and 0.9 V

Question 99

The period of a signal is 10 ms. What is its frequency in Hertz?

• 10
• 100
• 1000
• 10000

Question 100

‘FAN IN’ of a component A is defined as

• Count of the number of components that can call, or pass control, to a component A
• Number of components related to component A
• Number of components dependent on component A
• None of the above