Number Systems

Define the Binary Values

1 = True = on

0 = False = off

Define Most significant number/bit

The first character - furthest to the left

Define Least significant number/bit

The last character - furthest to the right

Name this method of conversion

Decimal to binary

Name this method of conversion

Decimal to Binary

Name this method of conversion

Binary to Decimal

Name this method of conversion

Binary to Decimal

Name this method of conversion

Hexadecimal to Decimal

Name this method of conversion

Decimal to Hexadecimal

What precaution must you keep in mind When converting a colour code from hex to decimal?

Break it into 3 pairs and then convert as normal

Name 2 advantages of ASCII

• Widely supported and compatible across programming languages

• Uses a small amount of space - efficient for storing simple text data

Name 2 disadvantages of ASCII

• Only supports 128 characters

• Lacks support for non Latin characters

Name 2 advantages of UNICODE

• Can represent over 143,000 characters

• Can be stored in different formats

Name 2 disadvantages of UNICODE

• Can take up more space than ASCII

• Some older systems or software may not fully support Unicode

Define UTF-8

A way of encoding characters to Unicode using 8 bits to represent each character

State the importance of ASCII and UNICODE

Provide standard ways for computers to represent characters that are readable by other computers

Differentiate between ASCII and UNICODE

ASCII

Compatibility with Older Systems

UNICODE

Modern software and internet standards