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• Accuracy: The information provided by the computer is very accurate. Sometimes we may feel that we are not getting
the desired result or maybe the output generated is not accurate. When we give wrong input to the computer, the
system malfunctions or gives wrong output. It works on the principle of GIGO(Garbage In Garbage Out).
• Reliability: Information received using a computer is highly reliable. During an online flight reservation, seat
allocated to one person cannot be reallocated to another at any cost. So, we can totally depend on the availability
of information of seats during online booking or availability of stock during online shopping.
• 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.
Tick ( ) if you know this.
Process is a method to convert raw data into meaningful information.
Storage is the process of storing either raw data or processed information.
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 to that of a type writer. Keyboard
Mouse
A mouse is another input device which is also known as a Pointing Device. As you move the
mouse, the pointer on the screen moves. A typical mouse has two buttons and a wheel. It can
be either wired or wireless.
Mouse
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
ICT Skills-I 59

