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• To represent all 25 letters of the alphabet, you would need at least 5 bits. 

• This is because you would need 25 combinations of 1s and 5s to represent each letter. 

• 5 bits give you 32 combinations whereas 4 bits give you 16 

• 7bit per character

ASCII 

American Standard Code for Information Interchange 

A coding system was created in the 1960s called the ASCII 

Each letter is required  by the keyboard was given a unique bit pattern 

A bit pattern is a combination of 1s and 0s that is used to represent data. 

Letters of the alphabet (lowercase) -- 26 

Letters of the alphabet – 26 

All numeric symbols –10 

Punctuation, symbols and 'space' -- 33 

32 codes reserved for non-printable control codes-32 

 

 

95 are prinatble 

32 are non prinatble 

127 in total 

 

Unicode 

As computers developed and 16 bit computers were introdyed, a new character set was dveloped to accommodate the variosus other languages of this world  

This new character set is nown as unclode Unicods used 32 bits (2 sets of 16 bits) to represebt every character in various language around the world 

Within the UNICODE system, the original 127 ASCII characters