Page 30 - ICT_for_JHS_Classical
P. 30
Stages of Information Processing Cycle
From the above, you can see that the Information Processing Cycle has four (4)
stages. These are:
Input
Processing
Output
Storage
Information Processing Cycle
Input
Input is the first stage of the cycle. Input is any data or instruction you enter into
a computer. Data could be in the form of text, pictures, music, pictures, etc. this
stage can be broken down into three (3) stages:
1. Acquisition (Collection) of Data
2. Entry of Data
3. Validation of Data
After the data has been acquired, it is entered into the system upon which the
data is validated so that correct results are given at the end of the cycle. Input
devices are used in this stage.
Input Devices
Input device is a device by which data is fed into the computer. It is any
hardware device that sends data to a computer, allowing interaction and control
the computer.
Examples of input device are; Keyboard, Mouse, Microphone,
Camera / Webcam, Scanner, Light Pen, Touchscreen (Finger), Stylus,
Digitizer, Barcode Code Reader, Trackball, Biometrics (Finger