Usuario
As we either have the presence or absence of an electroical volt
A complete set of characters and their unique number codes that is recognised by the computer hardware & software
Extended ASCII, uses 8 bits per character and used to represent characters like letters with accents
- Uses 7 bits per character
- The first 32 character are known as controlm characters
To standardise the encoding of characters from all languages
- Can apply a variable length encoding of either 16/32 bits
- The first 128 characters are the same as ASCII
- It uses 4 bytes per character & takes up 4 times the amount of space compared to ASCII
24
- Sign and magnitude
- Two's complement
- It's easier to do arithmetic calculations with 2s complement