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21 st MOUSE
EXPERIENTIAL LEARNING Century #Critical Thinking
Skills
A mouse is an input device that is used to tell the computer
Write the IPO cycle steps for the activities given below:
what to do by clicking a button. You can use it to draw pictures
(a) Subtract 3 from 5: and click on things on the computer screen. It has two buttons

INPUT PROCESS OUTPUT (a left button and a right button) and a scroll wheel in
the middle.

(b) Taking a picture using a smartphone: MICROPHONE

A microphone is an input device that is used to record sound,
INPUT PROCESS OUTPUT
voice and music. These recordings can be stored on the computer
to listen them later.

SCANNER

RAPID RECALL Tick ( ) if you know this. A scanner is an input device that copies pictures or words from

paper to the computer. You place the paper in the scanner and
1. IPO stands for Input, Process and Output. it creates an identical copy on the screen. It’s like taking a photo

2. A computer uses the keyboard and mouse to take input. and saving it on the computer.

JOYSTICK

A joystick is an input device that you hold in your hand to play

INPUT DEVICES games. It has a stick you move around to control the game, like
making a character walk, jump or fly.

Input devices are hardware devices that tell the computer what to do. These
devices give data and instructions to the

computer to perform tasks. PROCESSING DEVICE

Some input devices are keyboard, mouse, A standard keyboard has 104 A processing device is a part of the computer that helps make decisions and

microphone, scanner, joystick, barcode keys on it. perform work.
reader, etc.
CENTRAL PROCESSING UNIT (CPU)
KEYBOARD A CPU is the brain of the computer. It takes

A keyboard is an input device that is used the input you give, follows the instructions and
to type on a computer. It has many keys shows the output on output devices. It also

that you press to write letters, numbers and controls all the work of the computer. The CPU
other special characters. is located inside the CPU box or cabinet.

The Computer Story: In and Out 23