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## Input Devices ### Magnetic Ink Character Recognition (MICR) Readers - MICR readers are mainly used in the banking industry to read data on cheques. - They read the following information encoded on cheques: - The cheque number - The bank branch number - The customer's account numbe...

## Input Devices ### Magnetic Ink Character Recognition (MICR) Readers - MICR readers are mainly used in the banking industry to read data on cheques. - They read the following information encoded on cheques: - The cheque number - The bank branch number - The customer's account number - The bank also encodes the amount of money onto the cheque using an encoding machine. - This machine prints the amount onto the cheque in a special magnetic ink that contains iron oxide - The cheques are read by a MICR reader. - As the document passes into the MICR reader, the shapes of the characters are recognised electronically. - When the cheque is cashed, the bank transfers the money from the customer's account to the account of the person or business who has cashed the cheque. ### Optical Mark Recognition (OMR) Readers - An optical mark recognition (OMR) reader detects the position of dark patches on a sheet of paper. - The documents to be read have pre-printed boxes. - The user makes pencil or ink marks in the appropriate boxes. - The intensity of the reflected light from these marks on the form is detected by the OMR reader. - This is sometimes called mark sensing. - The computer records the positions of the marks and analyses them to determine the meaning of the data. - OMR readers are used mainly in assessing multiple-choice examinations or questionnaires given out by market researchers. - Another huge application of OMR is in electronic lotteries where participants can quickly and easily mark their selection of numbers on a machine-readable ticket.