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• Storage: Large volumes of data can be easily stored in a small space. Data can be preserved for a long time with
least possibility of data tamper or data loss. There is no need to maintain a huge volume of manual registers and
separate store room allocation to it.
• Versatile: Computer doesn’t mean a laptop or a personal computer. It can be a smartphone, tablet, online
booking counter machine, ATM machine, X-ray machine in hospitals and GPS system in our cars. It is available in
a variety of forms. So, we can say that it is highly versatile and has been designed to do any kind of job.
Input Devices
The devices which help to give data or instructions to the computer are called input devices. The most commonly
used are keyboard and mouse. Let us learn about some of the input devices.
Keyboard
A keyboard is probably the mostly used input device which can be either wired or
wireless. It is used to accept textual data from the user. It is impossible to imagine
a computer without one. A typical keyboard has a typing area that includes the
letters of the alphabet, numbers, punctuation marks, and other basic keys similar Keyboard
to that of a type writer.
Mouse
A mouse is another input device which is also known as a Pointing Device. As you move the mouse,
Mouse the pointer on the screen moves. A typical mouse has two buttons and a wheel. It can be either
wired or wireless.
Scanner
A scanner is a device used to read the hand written notes, images, photos, and transfer it
in a digital form onto the computer where it can later be saved or manipulated as per the
requirement. Scanner
Light Pen
A light pen is a pointing device shaped like a pen and is connected to a VDU. The tip of the light pen
Light Pen contains a light-sensitive element which, when placed against the screen, detects the light from the
screen enabling the computer to identify the location of the pen on the screen. We generally use it to
make a selection or draw anything on a screen.
Touchscreen
Touchscreen is the latest in the input devices where the input can be taken from the user
through a touch of a finger, stylus, or a light pen on a display screen. We can give the entire
set of commands by touching. Nowadays most of the laptops, Smart TV, smartphones, tablets,
etc. also have touch screens where the use of the keyboard is minimised. It is a very useful and
convenient alternative to a mouse or a keyboard in a graphical user interface. Touchscreen
Microphone
Microphone is a device that converts the sound received into a digital audio form which can be
easily stored or manipulated in a computer.
Microphone
48 Artificial Intelligence Play (Ver 1.0)-IX

