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Flashcards in Data Deck (12):
1

What is pixel

A digital image is composed of many small points of colour

2

Explain why using a JPG effects an image

It is a Lossy compression
It’s will reduce file size by deleting some data

3

What does ascii stand for

American standard code information interface

4

What is ASCII

Character set that define list of characters recognised by a computers hardware and software

5

How limiting ASCII

It has a limitation of 128 bits

6

How many possible characters goes ASCII have

128 possible characters

7

What is a much better version of ASCII

Unicode

8

Why is ASCII an disadvantage to the computing world

Can only be used by people who understand English

9

What does expanded ASCII give up

It gives us 256 bits of data for 8 bits

10

What do you need to work out the size file of an image

resolution,colour depth and image size

11

What effect the size of file

Sampling rate and bit depth

12

How do you work out the file size

File size = sample frequency x bit depth x recording length (seconds)