Input/Output Devices

Keyboard

04/09/23 2PCTE, Baddowal

2 button Mouse with scroll wheel

04/09/23 3PCTE, Baddowal

2 Button Mouse with scroll wheel

• A ball in the bottom of the mouse rolls on the surface as you move the mouse.

• Internal rollers sense the ball movement and transmit the information to computer via the cord of the mouse.

• If the ball is dirty, mouse does not roll smoothly.

04/09/23 4PCTE, Baddowal

Optical Mouse

04/09/23 5PCTE, Baddowal

Optical Mouse

• Does not use rolling ball.

• Uses light and a small optical sensor, which detects the motion of the mouse.

• Problem of dirty mouse ball is avoided by using optical mouse.

04/09/23 6PCTE, Baddowal

Wireless Mouse

04/09/23 7PCTE, Baddowal

Wireless Mouse

• Communicates through Bluetooth mostly.

• Needs external batteries.

04/09/23 8PCTE, Baddowal

Touchpad of a Laptop Computer

04/09/23 9PCTE, Baddowal

Touchpad

• Its a pointing device.• It consists of a special surface which translates

the motion & position of user’s fingers to a relative position on the screen.

• Commonly used in laptops as a substitute for a mouse.

• Also used in PDAs.

04/09/23 PCTE, Baddowal 10

Touchscreen

• Most simple, intuitive, and easiest to learn of all input devices.

• Enables users to choose from available options by simply touching with their finger the desired icon or menu item displayed on the screen.

04/09/23 PCTE, Baddowal 11

Touchscreen

• Most preferred human-computer interface used in information kiosks and ATMs.

04/09/23 PCTE, Baddowal 12

Mobile with Touch screen and QWERTY keyboard

04/09/23 13PCTE, Baddowal

Touch screen ATM

04/09/23 14PCTE, Baddowal

Trackpoint

04/09/23 15PCTE, Baddowal

Trackball Mouse

04/09/23 16PCTE, Baddowal

Trackball in a laptop

04/09/23 PCTE, Baddowal 17

Joystick

04/09/23 18PCTE, Baddowal

Light Pen

04/09/23 19PCTE, Baddowal