The correct answer is: A. Digitiser
A digitiser, also known as a graphics tablet or a pen tablet, is an input device that allows a user to hand-draw images or graphics directly onto a computer. It consists of a flat surface, known as a tablet, and a stylus. The user draws on the tablet with the stylus, and the tablet converts the movements of the stylus into digital signals that are sent to the computer.
Digitisers are often used in conjunction with computer-aided design (CAD) software, which allows users to create 2D or 3D models of objects. They are also used in graphic design, animation, and video editing.
A light pen is a pointing device that allows a user to select items on a computer screen by pointing at them with the pen. It consists of a light-sensitive sensor that is mounted on a pen-like device. When the user points the pen at the screen, the sensor detects the light from the screen and sends a signal to the computer. The computer then interprets the signal and selects the item that the user is pointing at.
Light pens were once popular input devices, but they have been largely replaced by other pointing devices, such as the mouse and the trackball.
A trackball is a pointing device that consists of a ball that is mounted in a socket. The user moves the ball with their fingers to move the cursor on the screen. Trackballs are often used in laptops, as they take up less space than a mouse.
A mouse is a pointing device that consists of a small, handheld device with two or three buttons. The user moves the mouse across a flat surface, such as a mousepad, to move the cursor on the screen. The buttons are used to select items and perform actions.
A tablet is a flat, rectangular device that is used to input data into a computer. It is typically made of glass or plastic and has a touchscreen interface. Tablets are often used for tasks such as browsing the internet, reading email, and playing games.
E. None of the above is not the correct answer.