Direct Entry Input Devices
Direct entry is a form of input that requires little or no human interaction. Direct Entry Input Devices create machine readable data on paper or magnetic media or feed it directly into the computer's CPU.
Three categories of direct entry devices are: (1) Pointing devices such as mouse, touch screen, light pen; (2) Scanning devices such as scanner, fax machine, BCR, OCR, MICR; (3) Voice Recognition Devices.
Examples of Direct Input Devices
Advantages of Direct Input Devices
- 1Entering data is quick. (swipe the card through the machine)
- 2No possibly of data entry errors as there is no typing involved
- 3The stripes on cards are not affected by water and so quite robust ( not easily damaged
Disadvantages of Direct Input Devices
- 1The magnetic stripe on cards can only hold a small amount of data.
- 2The cards need to be in contact with the reader in order to be used.
- 3If the stripe does get damaged then the data is lost (unreadable)
Indirect Entry Input Devices
Indirect entry is a form of input that requires human interaction to enter data into the system. It is sometimes referred as manual input. Indirect Entry Input Devices accepts human input and converts it into machine readable form for the CPU to process it further.