The correct answer is A. Optical character reader.
An optical character reader (OCR) is a device that scans printed text and converts it into a digital format that can be processed by a computer. OCR is used in a variety of applications, including data entry, document management, and optical character recognition (OCR) software.
Punched paper tape is a data storage medium that was used in early computers. It consists of a long strip of paper with holes punched in it. The holes represent data, such as numbers or letters. Punched paper tape was used to input data into computers and to store programs.
Card punch is a machine that punches holes in cards to represent data. The cards were then used to input data into computers. Card punch was used in early computers, but it has been replaced by other methods of data entry, such as optical character recognition (OCR).
Magnetic ink character recognition (MICR) is a technology that reads characters printed with magnetic ink. MICR is used in check processing and other applications where it is important to read data accurately.
None of the above is not a correct answer.