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

• 0 A
• 1 B
• x C
• 
  D

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

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

Logical multiplication refers to operation of.

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

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

• x A
• y B
• 1+x C
• 1+y D

Which of the following function is referred as the complementary.?

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

Logical addition refers to operation of

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

Boolean algebra is also known as.

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

The circuit that is used for parallel to serial conversion is

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

The heart of analog to digital converter (ADC) is

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

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

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

The 'Boolean Algebra' is based on the premise that

• there are two states A
• differential equations can be solved by analog circuits. B
• either a statement is true or false C
• arithmetic operations can be carried out D

Which of the following gate is two level logic gate.

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