Tuesday, November 25, 2008

Processing Data


What is Processing?

Processing is the work the computer does on the data to convert into into information. This can involve many things like calculations, logical operations such as sorts and queries or changing the shape of a sound wave to make a sound lower or higher in pitch

What is information?

A computer is a data processing machine. Computers process data to produce information. Information is data that has been changed into something meaningful. For example, in a supermarket the data from the bar code is processed to produce a receipt with the item names and prices included.

Also another well known type of information is examination results. These may be represented by a graph that clearly show the different percentages that students achieved in a particular class. The raw examination marks would have been entered in as data, and the the processing would involve converinting those marks to standardised scores and allocating the appropriate grade before presenting them in graphical format. This information makes it much clearer to assess the performance of the group rather then simply using raw data as this would take much longer as well.

Supermarket loyalty cards capture data when they are used. Information like customer number, date and time of purchase and codes of products bought are captured when the card is used at the checkout. The information collected can help the supermarket a great deal giving them details about shopping habits which can then help them decide what special offers may tempt you to spend more at their store.

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