Analogue and digital data

Question 1

How is data transferred?

Answer 1

It needs to be conveyed by either analogue or digital signals through cables or wireless.

Question 2

What is analogue data?

Answer 2

Analogue data is data that continuously varies.

An example of this would be human speech: sound waves travel through the air and can be heard by someone’s ears.

Analogue data includes non-digital music and any sounds produced in the environment.

Question 3

What is analogue data drawn as?

Answer 3

It is drawn as a smooth wave, they move smoothly and continuously through the air without breaks in them.

Question 4

What is digital data?

Answer 4

Digital data is data transmitted or stored using bits and bytes. The smooth analogue waves are sampled at regular intervals and simulate the sound waves.

Question 5

What is digital data drawn as?

Answer 5

Digital data is drawn in staggered waves. The computer fills in the gaps between the samples.

The more often the waves are sampled the higher the quality of sound.