DATA PROCESSING Flashcards
The word data is derived from Latin language
Datum
Any collection of facts of figures
Data
is the raw material to be processed by a computer
Data
Datum
Singular
Data
Plural
Example of Data are:
- Names of students
- Marks obtained in the examination
- Designation of employees
- Addresses
- Quantity
- Rate
- Sales Figures
- Photographs
- Drawings
- Charts and Maps
Measured or identified on a numerical scale
Numeric Data
Using statistical methods results can be displayed using tables, Charts, Histograms, Graphs
Numeric Data
The two types of Data
- Numeric Data
- Character Data
Used to describe certain types of information
Character Data
Terms are more precisely described as data in terms
Character Data
is represented in the form of numbers
Numeric Data
s 0-9 digits, a decimal
point (.), +, /, – sign and the letters “E” or “D” is an example of what type of data?
Numeric Data
The two groups of Character Data are
- String Data
- Graphical Data
consists of the sequence of characters
String Data
The string data is further divided into two types
- Alphabetic Data
- Alphanumeric Data
It is possible that pictures, charts and maps can be treated
as data
Graphical Data
The scanner is normally used to enter this type of data.
Graphical Data
The common use of this data is found in the National Identity Card.
Graphical Data
A collection of data which conveys some meaningful idea
Information
It may provide answers to questions like who, which,when, why,what,how
Information
What raw input means?
The raw input is data and it has no significance when it exists in that form.
What does it mean when data is collated or organized?
When data is collated or organized into something meaningful, it gains significance. This meaningful organization is information.
Any operation or set of operations performed upon data, whether or not
by automatic means, such as
❖ Collection
❖ Recording
❖ Organization
❖ Storage
❖ Adaptation
❖ Alteration to convert it into useful information.
Data Processing
Once data is collected, it is processed to convert it into useful information. The data is processed again and again until an accurate result is achieved. This thing is called
Data processing cycle