Introduction :
Introduction Some input systems can be automated
This can reduce the amount of time taken to input things into a computer
There are several devices that can be used to input data automatically. OMR Bar Codes OCR Magnetic Strips MICR
Optical mark Recognition :
Optical mark Recognition This is a system that reads marks on a special grid that it can recognise marks against
This is a good thing as it cuts down on time spent inputting these things into a computer
The system is often used in the lottery and in marking exam papers
Bar codes :
Bar codes This is a system that identifies the item by the gaps between a series of lines
These are used to identify the price of an item in a shop
They are a good thing because they are quicker to use rather than having to key in the price every time someone want to buy something
Magnetic ink character recognition :
Magnetic ink character recognition This is a system that recognises the characters on a piece of paper through the magnetic ink put on the paper
It reads the ink and then displays the characters on a screen
This is good because it saves time and is probably more accurate
Optical character recognition :
Optical character recognition This is a system that is used to recognise characters on a document without the aid of anything else (e.g. magnetic ink)
This is a good thing because it will cut down on errors and time spent transferring documents onto the computer
This system is used in airports to recognise passport details and scan them against the computer.
Magnetic strips :
Magnetic strips These are found on the back of most cards and are used to hold data about the card and its holder
These are good because it saves time and it is more accurate than someone outing in the numbers by hand
These strips are likely to be found on the back of credit cards and on access cards for places