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

The heart of analog to digital converter (ADC) is

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

Logical multiplication refers to operation of.

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

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

The circuit that is used for parallel to serial conversion is

• decoder A
• encoder B
• multiplexer C
• demultiplexer D

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y D

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  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

The commutative law in Boolean Algebra, where a, b and c are binary number is.

• a+0=a A
• a+1=1 B
• a+b=b+a C
• a. (b+c) = a.b +a.c. D

• 0 A
• 1 B
• x C
• 
  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

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

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

Odd parity of a word can be conveniently tested by.

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