Using light pen we can wright easily
advantages of pen drive
a pen light :)
function of light pen
cheap.
Light Pen is an input Device.
Light Pen is an input Device.
The advantages of pen drives are they are small and very compact making it easy to carry around a large amount of documents and transfer them onto another computer.
Because it emits a beam of light - which is detected by a special membrane on the computer screen.
The light pen is used to draw objects on a CRT computer screen. They are also used to display objects over computer devices.
Light pen is a mechanical or optical device? i don't know answer for this
Mouse or light pen