What is the function of joystick and light pen?
Joystick is actually used in computers for playing games . It is a hand device with the buttons in it from which the games are controlled. Mostly , the movement in the computer games are controlled by moving the joystick handler. While the light pen is device especially designed for computers for easiness of work.
What is the advantage of light pen?
Light pens enable you to interact with the screen with pinpoint accuracy. As you directly control where the cursor and all “clicks” land via the pen, only clumsiness impedes accurate selection. This accuracy makes the light pen appealing in roles where quick, precise selections are required.
What is the use of light pen Class 11?
A light pen is used for selecting a displayed menu item or for drawing pictures on the monitor screen.
How many types of light pens are there?
Answer: shines when it is used , the pen produces a bright light and can last long time on its battery . 3) design pen :- light pen is also a type of pen that allows designers to sketch using light . 4) led light pens :- this pen produces bright colours when it is squeezed.
What is the function of a trackball?
Essentially, the trackball is an upside-down mouse that rotates in place within a socket. The user rolls the ball to direct the cursor to the desired place on the screen and can click one of two buttons (identical to mouse buttons) near the trackball to select desktop objects or position the cursor for text entry.
What is the main advantage of using a light pen than a mouse?
Light pens are easy to use. They have extremely good positional accuracy on a computer screen, much more than is possible with a mouse or a touchscreen. They are ergonomically designed for ease of hand movement and are excellent for all drawing and pointing tasks.
What is the disadvantage of the light pen *?
What is the disadvantage of the light pen? Explanation: light pen requires special implementations and sometimes gives false reading due to background lighting in a room.
What is the use of light pen Brainly?
A light pen is the computer input device in the form of light sensitive wand used in conjunction with computer cathode ray tubes displayed . it allow a user to point to display object or draw on the screen in a Similar way to a touchscreen but with greater positional accuracy .
Who invented light pen?
The first light pen was invented by Ben Gurley in 1959. The basic idea for the computer mouse came to Douglas Engelbart in 1961, while he was attending a computer graphics conference. He was unsatisfied with the other pointing devices available at this time.
Who uses a light pen?
The light pen is often used in computers as an input device. When applied in a small laboratory computer, which also serves as a pulse height analyser, it facilitates considerably the processing of the results of measure- mentsl’2).
Is light pen is a pointing device?
Light Pen (similar to the pen) is a pointing device which is used to select a displayed menu item or draw pictures on the monitor screen.
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