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

Boolean algebra is also known as.

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

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  D

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

NAND gates are preferred over others because these.

• have lower fabrication area A
• can be used to make any gate B
• consume least elctronic power C
• provide maximum density in a chip 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

Logical addition refers to operation of

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

The logic device that perform Boolean multiplication is.

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

The heart of analog to digital converter (ADC) is

• comparator A
• pulse generator B
• voltage source C
• current source D

The half adder circuit has

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

Odd parity of a word can be conveniently tested by.

• OR gate A
• XOR gate B
• NOR gate C
• NAND gate D

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

• x A
• y B
• 1+x C
• 1+y D

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

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

• x + y A
• 
  B
• 
  C
• 
  D