Direct Data Entry (DDE) devices are hardware tools used to input data into a computer system without the need for manual typing. These devices allow fast and accurate data entry by capturing information automatically, reducing human errors and improving efficiency.
Optical Mark Reader (OMR)
Used to read marks made on specially designed forms, such as multiple-choice answer sheets or surveys.
Example: Exam answer sheets.
Optical Character Recognition (OCR)
Converts printed or handwritten text into digital format.
Example: Scanning a printed document and converting it into editable text.
Magnetic Ink Character Recognition (MICR)
Reads characters printed in magnetic ink, commonly used in banking for check processing.
Example: Bank cheques.
Barcode Scanner
Reads barcodes and converts them into digital data.
Example: Supermarket checkout scanners.
Radio Frequency Identification (RFID)
Uses radio waves to transfer data stored in RFID tags.
Example: Contactless payment cards, inventory tracking.
Magnetic Stripe Reader
Reads data stored on magnetic stripes, such as on credit or debit cards.
Example: ATM machines.
Smart Card Reader
Reads embedded chips in smart cards, often used for security and identification.
Example: Employee ID cards, access control systems.
Biometric Scanners
Captures fingerprints, facial recognition, or retina scans for authentication.
Example: Fingerprint attendance systems.