4.5.6 Representing Images, Sound And Other Data. Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is analogue data?

A

No limits to the values that the data can take in.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is digital data?

A

Discrete, meaning it can onlt take particular values.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What range of values can analogue data take?

A

Any range.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What range can digital data take?

A

One of a specified range of values.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How often can analogue data change?

A

As frequently as required.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How often does digital data create?

A

At specified intervals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does an analogue signal look like?

A

Smooth curves and sometimes feature sharp peaks.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does a digital signal look like?

A

Sharp edges and vertical drops.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is DAC?

A

Digital to analogue conversion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How do you convert from digital to analogue?

A

Using a digital to analogue converter (DAC).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does a DAC do?

A

Reads a bit pattern representing an analogue signal and outputs n alternating, analogue, electrical current.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the most common use for a DAC?

A

Converting digital aidio signals into analogue signals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly