Ch 16

Question 1

Digital quantities

Answer 1

Quantities whose values vary in non continuous manner

Question 2

Analogue signal

Answer 2

A continuously varying signal

Question 3

Digital signal

Answer 3

A signal that can have only two discrete values

Question 4

Analogue to digital converter

Answer 4

A special circuit has been designed which converts the analogue signal into a digital one in the form of digits in binary form

Question 5

Digital to analogue

Answer 5

The output of the computer is again converted into an analogue form by a circuit

Question 6

Binary variables

Answer 6

Such things which can only have two possible states

Question 7

Logic gate

Answer 7

A switching circuit it’s output can have only one of the two possible states either a high voltage 1 or a low voltage 0 it is either on or off

Question 8

Logical operations

Answer 8

Digital circuits perform the binary arithmetic operation with binary digits 1 and 0 these operation are called logical operations

Question 9

And gate

Answer 9

Output of and gate will be only 1 when all of its inputs are at logic 1 and for all other situations output is 0

Question 10

Or gate

Answer 10

The value of output of or gate will be 1 when anyone of its inputs is at 1 the output will be 0 when all inputs are at 0

Question 11

Not gate

Answer 11

Not gate works in such a way that if it’s input is 0 it’s output would be 1 if it’s 1 then it will be 0

Question 12

Inverter , complementation

Answer 12

Not gate performs the basic logical function called inversion or complementation not gate is also called inverter