Please enable JavaScript.
Coggle requires JavaScript to display documents.
Input devices and their advantages and disadvantages - Coggle Diagram
Input devices and their advantages and disadvantages
Keyboards:
Advantages
Enables fast entry of new text into a document
Well tried technology and well known method of entry
Most people find them easy to use
Easy to do verification check as data is entered, as it appears on the screen simultaneously
Disadvantages
Users with limited arm/wrist use can find keyboards hard to use
Entering data is slow when compared to direct data entry (e.g. Optical mark recognition)
They use up desk space as they are quite large
Mouse:
Advantages
Faster to select an option by a mouse than a keyboard
Enables rapid navigation through applications and the internet
Mice are small and don’t take much area
Disadvantages
People with restricted hand/wrist movement can find it hard to operate a mouse
Easily damaged and can easily be clogged up with dirt
They are hard to use if there is no flat surface available
Joysticks:
Advantages
Easier to navigate round a screen compared to a keyboard
Control is in three dimension
Disadvantages
More difficult to control the on-screen pointer with a joystick than with other devices such as mice
Scanners:
Advantages
Images can be stored for editing at a later date
Scanners are much faster and more accurate than typing in documents again
It is possible to recover damaged documents and photographs by scanning them and then using appropriate software to produce an acceptable copy
Disadvantages
The quality can be limited depending on how good the scanner resolution is
Barcode readers:
Advantages
Faster than keying in information, and fewer mistakes are made
Used as a way of recording data, can improve safety
Barcodes enable automatic stock control
Barcode scanning is a tried and trusted technology
When an item price is changed, only the central database needs to be updated, there is no need to change the prices individually on each item
Disadvantages
Barcode scanning is an expensive system to administer since every item in the shops needs a barcode and every barcode needs to be entered on the system.
Also there is a need to invest in the
computer technology together with staff training, which can all be expensive
The system is not fool proof- barcode can be swapped around on items
Webcams:
Advantages
Can be left on constantly and activated when required
Allow people to keep in contact with each other without the need to travel, particularly useful for disabled or elderly people
Disadvantages
Webcams have limited features and the picture is often of poor quality
They need to be connected to a computer