Input Devices

Input Devices

1. Bar code Reader

   • uses laser to read light reflected from black & white lines (1's & 0's)
   • Binary code represents product information which can be stored in a database
   • It can be found in retail sale, library loan, postal package tracking and stock control
   • It i a fast and accurate input method but can not be edited

2. Digital Camera

   • The pattern of light is associated with the image is stored digitally rather than on film
   • It can be used for: Everyday personal use, speed cameras, number plate recognition and for engineers to communicate to clients
   • The image an be used flexibly in a wide range of applications. It can be modified and lo attached as a file to an email.

3. Keyboard

   • Translates key selections into digital format text/number values
   • It also contains function keys which allow user to 'delete' and 'scroll down.
   • Inputs text directly into the computer and also can send instructions and commands to computer-based control systems

4. MICR

   • Data is printed in the form of specially designed character. The ink used to print these characters contain a magnetic substance
   • Bank use this approach to process cheques. Cheques are designed to have key data (branch) details, account number printed in magnetic ink across the bottom

5. Enter text here