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CODING AND ENCODING DATA
- ENCODING DATA
- Used by all computers to convert
data into machine-readable form
- All computers understand is binary,
1s and 0s, this is difficult for humans
to understand
- For people to use computers, data they use must
be encoded into binary for a comp. to process and
share.
- Way of encoding test is by using
ASCII (most widely used coding system) to represent each
character as a binary number
- Examples of files stored in binary code
- Text e.g. DOC files
- Digital pictures e.g. bitmaps, JPG and GIF files
- Sound files e.g. WAV or MP3 files
- Text e.g. DOC files
- Program instructions are also
stored in binary code.
- Used by all computers to convert
data into machine-readable form
- CODING DATA
- Some data is coded before it is stored, this
changes the original data into a shortened version
by assigning a code
- When data is coded it is done to keep it short - saving
storage space.
- Speeds up data
entry
- Example coding
- M/F for Male or Female
- Y/N for Yes or No
- DOB e.g. 22 March
1997 are coded as 22 03
1997
- M/F for Male or Female
- Enter text here
- Some data is coded before it is stored, this
changes the original data into a shortened version
by assigning a code
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