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

• 0 A
• 1 B
• x 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

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

Logical multiplication refers to operation of.

• OR gate A
• AND gate B
• NOT gate C
• inverter gater 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 circuit that is used for parallel to serial conversion is

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

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

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

The half adder circuit has

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

In a three input NAND gate, if all the inputs are 1, the output is.

• 0 A
• 1 B
• 3 C
• indeterminate D

If A and B are two 1-bit numbers, what logic gates will be required to test for A=B?

• NOR gate A
• EXCLUSIVE OR gate B
• EXCLUSIVE NOT gate C
• OR gate D

Which of the following gate is two level logic gate.

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

Which of the following operations are used by Boolean algebra.?

• Boolean addition A
• Boolean multiplication B
• Boolean complementation C
• All of the above D