Digital electronics

A Flip Flop is a

• Memory element

• Sequential circuit

• combinational circuit

• arithmatic element

In octal number system, the number after 7 is

• 8

• 10

• 15

• A

which of the following circuits can be used as parallel to serial converter?

• Multiplexer

• Demultiplexer

• Digital counter

• Decoder

A number is expressed in binary twos complement as 10011. Its decimal equivalent value is

• 19

• 13

• -19

• -13

The number of inputs and outputs in a full adder are

• 2 and 1

• 2 and 2

• 3 and 2

• 3 and 3

which device has one input and many outputs

• flip flop

• multiplexer

• demultiplexer

• counter

which one of the following is a universal gate

• NAND gate

• AND gate

• OR gate

• EX-OR gate

A flip flop can store

• 1 bit

• 2 bits

• 4 bits

• 8 bits

In boolean algebra A.1=?

• A

• 1

• 0

• NAN( not a number)

A.A= ?

• A

• 1

• 0

• Can't say