CS1105-Digital Electronics & Computer Architecture

Which Boolean operator represents the complement of a variable? 

• a.

  AND 

• b.

  NOT 

• c.

  OR 

• d.

  XOR 

What is the fundamental unit of digital design?

• a.

  Logic gate

• b.

  Integrated circuit

• c.

  Microprocessor

• d.

  Transistor

How many input combinations are possible for a 4-input OR gate? 

• a. 2

• b. 3

• c. 4

• d. 16

Which logic gate is the complement of an AND gate?

• NOR

• NAND

• XOR

• NOT

Boolean algebra is used to:

• Simplify digital circuits

• Design mechanical systems

• Analyze chemical reactions

• None of the above

What is the output of an XOR gate when both inputs are the same? 

• True

• False

Which of the following is a universal gate, meaning any logic operation can be implemented using it? 

• AND gate 

• NOT gate 

• OR gate 

• NAND gate 

Which Boolean operation is equivalent to an OR gate?

• AND

• NOT

• OR

• XOR

How many input combinations are possible for a 3-input NAND gate? 

• 2

• 3

• 4

• 8

The output of an XNOR gate is true only when: 

• All inputs are true 

• All inputs are false 

• Both a and b 

• One input is true