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

The circuit that is used for parallel to serial conversion is

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

According to Idempotent law , x + y = __________

• 1 A
• 0 B
• x C
• x . x 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

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

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

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

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

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

The logic device that perform Boolean multiplication is.

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

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

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

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

Boolean algebra is also known as.

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

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