3.2 Data Representation (3.2.1. ASCII and Unicode)

how many characters can be represented in standard ASCII?

128

how many characters can be represented in extended ASCII

256 characters

number of bits used with unicode

32

how many bits in standard ASCII

7 bits

how many bits in extended ASCII

8 bits

what does ASCII stand for

American Standard Code for Information Interchange

what companies use unicode

Google, Facebook

Gives a standard code to

letters characters numbers symbols unprintable characters e.g.: backspace, delete, enter

are different fonts, sizes and colours represented by unicode?

no

can ASCII support other common languages

no (even the extended version can't)

problems of unicode

takes up more space

why do companies use unicode

their users use many different languages

How do computers encode characters?

using ASCII and unicode

what is unicode not used by?

word processors (e.g.: Microsoft Word)

can ASCII support the English language

yes

can unicode support other common languages

yes

can unicode support the English language?

yes

is ASCII the same on all computers?

yes