Data Processing
Data: It is unprocessed information.
Data processing is the collecting of data together and
converting them into a meaningful information or result.
Method of Data Processing:
1. Manual Method: This involve the
processing of data using manual method, like stones, beads, natural ability or
strength etc. it is known as the traditional way of processing data and also the
oldest method of data processing.
2. Mechanical Method: It involves the
use of mechanical devices such as adding machine, calculator, type writer etc to
process data.
3. Electronic Method: it involves the
use of electronic devices such as computer system, electronic calculators etc,
to process data.
Stages of Data Processing
1. Collection of data/resource document
2. Imputation of data
3. Processing of data / manipulation of
data
4. Storage of data
5. The generation of information
Types of Data
1. Alphabetical data: They are recorded in form of text on which calculation cannot be perform
e.g list of names.
2. Numerical data:
They are recorded as numbers on which calculation can be perform e.g salary figures.
Processing in such usually takes the form of sorting, arithmetic searching,
comparism etc.
3. Logical data:
They are data that can have only two possible values under a given condition. It
is used in a situation where decision making is needed e.g “true or false” “good
or bad” etc.
4. Graphical data: They are data that are recorded
in form of pictures .Its representation includes statistical charts,
mathematical graphs, architectural and engineering drawings, organizational charts
e.t.c.
5. Date data:
They are used to represent date and time. YY MM DD, DD MM YY are the two standard
methods of representing date.
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