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

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y D

The half adder circuit has

• one input A
• two inputs B
• three inputs C
• always more than two inputs D

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

• 5A A
• A B
• A⁵ C
• 1 D

Boolean expression for NOR gate with two inputs x and y can be written as.

• x + y__ A
• x. y B
• x + y C
• 
  D

Which of the following statement is true in the case of AND gate with input A and B.

• If A and B are applied, there will not be any output A
• If neither input is applied, there will be an output B
• If one input is applied there will not be any output C
• If one input is applied there will be an output D

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

The logic device that perform Boolean multiplication is.

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

Logical multiplication refers to operation of.

• OR gate A
• AND gate B
• NOT gate C
• inverter gater D

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

According to Idempotent law , x + y = __________

• 1 A
• 0 B
• x C
• x . x D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

The output will be one in case any input is one in the case of.

• OR gate A
• AND gate B
• NAND gate C
• NOT gate D

Boolean algebra is also known as.

• logical algebra A
• control algebra B
• switching algebra C
• programming algebra D

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

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

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