Data Representation Flashcards Preview

Computer Science > Data Representation > Flashcards

Flashcards in Data Representation Deck (11):
1

What is derived from data

Information

2

What is data

Raw facts and figures without meaning

3

What is a character

A letter, digit or space

4

How many bits is the ASCII

7-bit

5

What is the extension of ASCII called

Unicode

6

How is an instruction read by the computer

Using an opcode and an operand

7

How is sound converted to a digital signal

Sampling

8

What is the number of times that the sound level is sampled per second

Sampling frequency

9

What are bitmap images

An array of pixels to show an image

10

Examples of metadata

Height, width, time take and colour depth

11

What happens without metadata

The image is rendered incorrectly