Data consists of facts and figures that are collected and converted into a binary format for computers to process into useful information. There are different types of data including string, numeric, picture, and sound data. String data can contain letters, numbers, and symbols. Numeric data is in number form and can be used for calculations, divided into integers and floating points. Picture data includes images, maps, and diagrams entered through scanners, cameras, or design software. Sound data contains audio entered through microphones or other audio devices like songs or speech.

1. Data

2. • It is raw facts, which we give to computer,
computer manipulate and process it to convert
into useful information.
• Collection of facts and figures is called data.Collection of facts and figures is called data.
• It can consist of letters, numbers sounds or
images. Computer converts all type of data into
(binary) numbers form for processing.

3. Types of Data
We can divide it in many types but following are
most common.
String data
Numeric Data
Picture data
Sound data

4. String data
• This data can include alphabets, numbers and
special characters. So cannot be used in
calculation.
• If it contains only alphabets then it is called
alphabetic data. Example is name of person or
thing like ”ALI”, “CHAIR” etc.
• If it contains alphabets, numbers and special
characters it is called alphanumeric. Example is
Car number, address like “CD-70”, “B-122
Latifabad”.

5. Numeric Data
• If data is in number form it is called numeric
data.
• It can be used in calculations.
• It contains digits from 0 to 9, mathematic signs
and symbols.
• In computers it can be further divided in to
Integer, which has no point value. For example
5,66, -67,0 and floating point or real which have
decimal point values. For example 4.56, -77.5444

6. Picture or video data
This data include pictures, maps, figures, graphs,
diagrams, movie etc.
Usually scanner is used to get this data but some
designing software help to enter this data by
other devices like mouse or keyboard. Digital
camera or web cam also used for this data input.

7. Sound data
This data include sound, which can be entered
through microphones or through other audio
devices.
Example is songs or speech.