ECAT Pre Computer Science MCQ Test For Computer Chapter 5 With Answer

The logic device that perform Boolean multiplication is.

• AND gate A
• OR gate B
• Inverter C
• None of these D

Boolean algebra use which of the following to represent arithmetic quantities.

• decimal digits A
• exponents B
• binary bits C
• fractions D

In Boolean algebra A.A.A.A.A

• 5A A
• A B
• A⁵ C
• 1 D

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

• 0 A
• 1 B
• x C
• 
  D

• 0 A
• 1 B
• x C
• 
  D

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  D

According to Boolean algebra A+A+......+A is

• A A
• n A B
• 0 C
• 1 D

An OR gate has 6 input. The number of input words in its truth table are.

• 6 A
• 32 B
• 64 C
• 128 D

Boolean algebra is.

• used for arithmetical operation is ALU A
• an aid for binary conversion B
• useful for error detection and error correction C
• used to describe the behavior and structure of logic networks and as an aid in the design of logic system D

• x . y A
• x + y B
• x . y C
• x . y D

According to absorption law x. (x+y) =

• x A
• y B
• 1+x C
• 1+y D

Which of the following gate is two level logic gate.

• OR gate A
• AND gate B
• EXCLUSIVE OR gate C
• NAND gate D

• A + B + C + D A
• 
  B
• A + B C + D C
• 
  D

Boolean description for the exclusive OR gate for two inputs x and y can be written as.

• x + y __ A
• _x _y B
• x. y + x. y C
• x . y + x .y D