Is a small metal or plastic device that looks like a tiny ink pen, but uses pressure instead of ink

• Question 3 B

Question 3 B

Describe several pointing devices, giving examples of each.

A pointing device is an input device that allows a user to control a pointer on the screen. In a graphical user interface, a pointer is a small symbol on the screen whose location and shape change as a user moves a pointing device.

Here are some examples of pointing devices:

1.Mouse

A mouse is a pointing device that fits under the palm of your hand comfortably. The mouse is the most widely used pointing deice on desktop computers.

2.Trackball

A trackball is a stationary pointing device with a ball on its top or side. The ball in most trackball is about the size of a Ping-Pong ball. 

To move the pointer, you will need to rotate the ball with your thumb, fingers, or the palm of your hand.

In addition to the ball, a trackball usually has one or more buttons that work just like mouse buttons.

3.Touchpad

A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion. To move the pointer using a touchpad, slide your fingertip across the surface of the pad. Some touchpads have one or more buttons around edge of the pad that work like a mouse buttons. 

On most touchpads, you also can tap the pad's surface to imitate mouse operations such as clicking.

Touchpads are found most often on notebook computers.

4.Pointing Stick

A pointing stick is a pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboard. To move the pointer using a pointing stick, you will need to push the pointing stick with a finger.

The pointer on the screen moves in the direction you push the pointing stick.

5.Light Pen

A light pen is a handheld input device that can detect the presence of light. To select objects on the screen, a user presses the light pen against the surface of the screen or points the light pen at the screen and then presses a button on the pen.

6.Touch Screen

A touch screen is a touch-sensitive display device.Users can interact with these devices by touching areas of the screen. Because touch screen require a lot of arm movements, you do not enter large amounts of data using a touch screen.

7.Pen Input

Mobile users often enter data and instructions with a pen-type device. With pen input, users write, draw, and tap on flat surface to enter input. The surface may be a monitor, a screen, a special type of paper or a graphics tablet.

There are 2 pen input device which are Stylus and Digital Pen.

A stylus is a small metal or plastic device that looks like a tiny ink pen but uses pressure instead of ink.

A digital pen, which is slightly larger than a stylus, is available in two forms:some are pressure-sensitive: others have a tiny built-in digital camera.