The document discusses the input-process-output (IPO) data flow model. Input devices like keyboards and mice are used to input raw data into the computer. The central processing unit then processes the data by performing operations on it. Output devices like monitors and printers are used to output the processed information to the outside world. The IPO cycle involves information flowing from input to processing to output devices, with results sometimes feeding back as new inputs. Two examples of the IPO cycle are generating a report card and adding two numbers.

1. SNBP WOLD SCHOOL , RAHATHANI
ICT CLASS : IV
CHAPTER 1 : KNOW YOUR
COMPUTER
TOPIC : INPUT – PROCESS –
OUTPUT DATA FLOW

2. CONTENT
• INPUT – PROCESS – OUTPUT DATA FLOW
• INPUT
• PROCESS
• OUTPUT
• IPO CYCLE

3. OBJECTIVES
• To give us basic knowledge of IPO cycle.

4. INPUT : Given raw data to the computer. Using
devices (Keyboard , mouse)
PROCESS : On raw data is manipulated to generate
information by performing certain operation ..
Using computer’ s processing device ( CPU )
OUTPUT : Information generated is known as
OUTPUT.
It is given to the outside world using output device (
Monitor , printer )

5.  IPO CYCLE
 Three terms I . E . Input , Process and Output are
interrelated.
 The information flows from input devices to the
processing devices and then to output devices.
 Sometimes the result generated acts as an input for
the next stage of data flow
 This whole flow of information follows the cycle
known as Input – Process – Output cycle.

6.  Information often needs to be kept safe for later
use.
 This information may be stored in storage devices
like floppy disc , compact disc , hard disc , flash
drive , memory card etc.

7. LET’S ONE EXAMPLE OF IPO CYCLE
Generating a report card
1. INPUT : The marks of all subjects entered in the
computer.
2. PROCESS : Percentages or grades calculated and
report card generated.
3. OUTPUT : The generated report card displayed on
the monitor taken out as an printout.

8. ADDING TWO NUMBERS
1. INPUT : Two numbers to be added , are given to
the computer using input devices.
2. Addition operation is performed on these two
numbers.
3. OUTPUT : Result is displayed on the screen.