Input Devices

Input Devices

Barcodes are different groups of vertical bars that can be read by an

optical scanner. Barcodes are printed on nearly every product that you

can buy. Shops use them because they are cheap to produce and very

durable.

No

At present, a barcode reader is not one of John Browns requirements.

Maybe at a later stage he may decide to purchase one to make it easier

to enter product information onto the computer.

Keyboard

They are the most popular input peripheral. Most computer systems come

with one. It is easy to make mistakes when you are using a keyboard.

There are some specialist keyboard like a Braille Keyboard which has

fewer keys

Yes

Keyboard comes with the PC and the laptop

Mouse

This input is small (like a mouse) and has a ‘tail’ in the form of a

wire connecting it to a computer. When it is moved, a pointer or

cursor moves on the screen.

Yes

On the laptop, there is a touch pad; it is used instead of a mouse. A

mouse comes with the computer.

Roller ball

Can be used instead of a mouse, it is like an upside-down mouse. The

user rotates the ball with their thumb or the palm of their hand.

No

John brown did not require a roller ball. maybe if he can require it

later, if he want to used it rather than a mouse

Scanner

They used to scan photographs and other images so they can be put

into document or web pages. They can also be used to scan text into a

word-processing.

No

John brown did not require a scanner. He should order one because he

can scan photo of sport stuff limited on his websites to show

customer.

Digital camera

It looks an ordinary camera expect there is not film and there is a

screen on which you can view the picture you are taking. They have