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Advantages and Disadvantages Input Devices (1)
Descrição
Mapa Mental sobre Advantages and Disadvantages Input Devices (1), criado por abidee123 em 17-10-2013.
Mapa Mental por
abidee123
, atualizado more than 1 year ago
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Criado por
abidee123
aproximadamente 11 anos atrás
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Advantages and Disadvantages Input Devices (1)
Disadvantages
Barcode Reader
data on barcode can not be edited
Digital Camera
Image files can be memory heavy
Quality of output will depend on quality of printer and paper
Keyboard
Data entry is time consuming and dependent on typing skills
They can contribute to repetitive strain injury if overused
Magnetic Ink Character Reader
Its use is in decline
Smart Cards
Can be stolen
Pointing Device
Experts tend to use keyboard short cuts
Hand-eye coordination is an issue for some users
Optical Character Reader
Can misread letters so has to be proof-read afterwards
Not good at capturing hand-written text. Also document must not contain any marks or smudges that could be interpreted as characters
Optical Mark Reader
The input forms necessarily limit the range of permissible responses
Incorrect marking of the sheet will lead to the data being rejected
Sensors
They are limited in the type of data they can collect
They can misread the environment
Touch Screens
They are limited as input devices because only a limited number of values can be displayed at once
Speech Input
Interpreting human language us a complex process because meaning can be ambiguous
The human voice is not uniform, we all have different accents which the software has to adapt to
Advantages
Barcode Reader
Fast input method
Accurate
Digital Camera
The image can be used flexibly in a wide range of applications
Can be modified using special software
Can be attached as a file in email
Keyboard
Most common method of inputting text based data
Magnetic Ink Character Reader
quick and efficient
humans can make sense of data as well as machines
resistant to forgery
Smart Card
increasingly used for transactions
contain more data and are robust and more secure
Pointing Devices
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