Processing Methods
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REAL TIME PROCESSING
Real-time uses on-line systems which are directly connected to a computer and under its control.
The computer is always ready for data to be input.
Information is processed immediately
As soon as data is received it is processed and results are output straight away
The computer is often dedicated to the real time processing application and it cannot work on anything else.
Examples
- Computer controlling flight simulator
- Computer controlling industrial process
- Interactive game
- Travel agents holiday booking system
Advantages
- fast response
- output may be used to adjust and improve the input
- information is always up-to-date
Disadvantages
- a real-time computer cannot be used to run anything else
BATCH PROCESSING
The following example shows how meter readings are taken and how they are used to produce electricity bills.
1. Data or information is collected off-line - not connected to the main computer system
Data is stored in a transaction file
2. Transaction file is sorted into order
Meter readings are sorted by account number
- this makes it really easy for the master file to be updated
3. Transaction file is used to update the master file
- transaction file is processed by linking and updating the master file
Example - Payroll System
Example - Processing Meter Readings For Bills
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by: Admin
Total views: 1289
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Date: Wed, 2 Aug 2006 Time: 12:00 AM
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