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

An OR gate has 6 input. The number of input words in its truth table are.

• 6 A
• 32 B
• 64 C
• 128 D

The heart of analog to digital converter (ADC) is

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

• x + y A
• 
  B
• 
  C
• 
  D

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + 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

Logical addition refers to operation of

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

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

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

The logic device that perform Boolean multiplication is.

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

• 0 A
• 1 B
• x C
• 
  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

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

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