Boolean Algebra

Which of the following is true?

• A Boolean data type has only two values: A and B

• A Boolean data type has only two values: yes and no

• A Boolean data type has only two values: true and false

• A Boolean data type has only two values: 1 and 0

Which of the following Boolean statements is true?

• x > y will give the result false when the value of x is greater than the value of y

• x > y will give the result true when the value of x is greater than the value of y

• x > y will give the result true when the value of x is less than the value of y

• x > y will give the result false when the value of x is less than the value of y

Which one of the following circuits is NOT equivalent to a 2-input XNOR (exclusive NOR) gate?

• 
• 
• 
• 

What is the minimum number of gates required to implement the Boolean function (AB+C) if we have to use only 2-input NOR gates?

• 2

• 3

• 4

• 5

Which of the following are logic gates?

• OR

• NOT

• XOR

• AND

With four signal inputs, how many possible outputs are there?

• 16

• 24

• 4

• 8

What is the purpose of logic gates?

• To allow an electronic system to make a decision based on its outputs

• To allow an electronic system to make a decision based on its inputs

• To allow a program to make a decision based on its inputs

• To allow a program to make a decision based on its outputs only

What is the Boolean Expression of an OR gate?

What gate outputs 1 if and only if at least one input is 1?

What is the output of an EX-NOR gate?

• (AB' + A'B)'

• (AB + A'B')

• A'B + AB'

• (AB + AB)''