Digital Electronics Lab

Which are the UNIVERSAL GATES?

• XOR Gate & NOT Gate

• AND Gate & OR Gate

• NAND Gate & NOR Gate

• All of the above

In the case of OR gate,no matter what the no. of inputs a

• 1 at any input causes the output to be at logic 1

• 1 at any input causes the output to be at logic 0

• 0 any input causes the output to be at logic 0

• 0 at any input causes the output to be at logic 1.

The inverter is....................

• NAND Gate

• XOR Gate

• AND Gate

• NOT Gate

The NOR Gate is OR Gate followed by ...............

• OR Gate

• NOT Gate

• AND Gate

• None of the above

NAND Gate is called a universal logic element, because

• It is used by everybody

• Any logic function can be realised by NAND Gate alone

• Many digital computers use NAND Gate

• All the minimisation techniques are applicable to optimum NAND Gate realisation

Which is the correct order of sequence for representing input values in K-map?

• (00,01,10,11)

• (00,10,01,11)

• (00,01,11,10)

• (00,10,11,01)

The inputs of a NAND Gate are connected together. The resulting circuit is .............

• AND Gate

• OR Gate

• NOT Gate

• None of the above

The only function of NOT Gate is to ....................

• Stop signal

• Invert input signal

• Act as universal gate

• All of the above

To realise a stair case wiring (i.e, one lamp controlled by two switches), which of the following gate is useful?

• NOR Gate

• XOR Gate

• AND Gate

• NAND Gate

Convert binary number 1011 to gray code

• 1101

• 1110

• 1111

• 1100