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Data – Coding and
Encoding
Why is data coded and
encoded?
Encoding and coding of data..
+ When data is collected it needs to be encoded. This could
be for fields on a paper-based document
+ Coding data in order to be able to process it effectively is
extremely important
+ If you ask 1oo people how good they think a restaurant is
they could all give a different answer
+ Which would be difficult to enter it in as data to analyze it
further e.g. if you rated a restaurant on a scale of 1-5 1
being excellent and 5 being poor. The single digit can be
entered into a computer and the number makes it easy to
analyze and compare data.
Encoding data
+ Encoding is used by computers to convert the data
into a machine readable form. All computers
understand binary which is 1s and 0s. This can be
difficult for humans to understand. In order for
people to use computers the data that they use must
be encoded into binary for a computer to process and
share encoding our language into machine readable
form.
+ A way of encoding text is by using ASCII to represent
each character as a binary number.
BINARY Letters and number
assigned to QWERTY keyboard
Coding
+ Some data is coded before storage and this changes
the original data into shortened version by assigning a
code. Wjen data is coded it is essentially done to keep
it short which saves storage space but it speeds up
data entry.
+ Some codings: Gender M or F/ Male or Female
+ Y or N or Yes or N
Encoding Data…in a nutshell
+ Converts data into machine readable form.
+ Computers work in binary (0’s and 1’s)
+ Binary difficult for people to understand.
+ Data must be encoded into binary for a computer to
process and share.
Coding… in a nutshell
+ Some data is coded before storage and this changes
the original data into a shortened version by assigning
a code.
+ Data is coded to keep it short – more storage as takes
up less space, speeds up data entry, increase accuracy,
faster searching
+ M for male, F for female
Coding and encoding

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Coding and encoding

  • 1. Data – Coding and Encoding
  • 2. Why is data coded and encoded?
  • 3. Encoding and coding of data.. + When data is collected it needs to be encoded. This could be for fields on a paper-based document + Coding data in order to be able to process it effectively is extremely important + If you ask 1oo people how good they think a restaurant is they could all give a different answer + Which would be difficult to enter it in as data to analyze it further e.g. if you rated a restaurant on a scale of 1-5 1 being excellent and 5 being poor. The single digit can be entered into a computer and the number makes it easy to analyze and compare data.
  • 4. Encoding data + Encoding is used by computers to convert the data into a machine readable form. All computers understand binary which is 1s and 0s. This can be difficult for humans to understand. In order for people to use computers the data that they use must be encoded into binary for a computer to process and share encoding our language into machine readable form. + A way of encoding text is by using ASCII to represent each character as a binary number.
  • 5. BINARY Letters and number assigned to QWERTY keyboard
  • 6. Coding + Some data is coded before storage and this changes the original data into shortened version by assigning a code. Wjen data is coded it is essentially done to keep it short which saves storage space but it speeds up data entry. + Some codings: Gender M or F/ Male or Female + Y or N or Yes or N
  • 7. Encoding Data…in a nutshell + Converts data into machine readable form. + Computers work in binary (0’s and 1’s) + Binary difficult for people to understand. + Data must be encoded into binary for a computer to process and share.
  • 8. Coding… in a nutshell + Some data is coded before storage and this changes the original data into a shortened version by assigning a code. + Data is coded to keep it short – more storage as takes up less space, speeds up data entry, increase accuracy, faster searching + M for male, F for female