Card reader
Card punch
Punched paper tape
Character reader E. None of the above
Answer is Right!
Answer is Wrong!
The correct answer is: A. Card reader
A card reader is a device that reads data from punched cards. Punched cards are a type of data storage medium that was used in early computers. They are made of stiff paper with holes punched in them to represent data. The card reader reads the holes in the cards and converts them into electrical signals that the computer can understand.
Card readers were once a common input device for computers, but they have been largely replaced by other input devices such as keyboards and mice. However, they are still used in some specialized applications, such as data entry and inventory control.
Here is a brief explanation of each option:
- B. Card punch is a device that punches holes in cards to represent data. It is the opposite of a card reader. Card punches were once used to input data into computers, but they have been largely replaced by other input devices such as keyboards and mice.
- C. Punched paper tape is a type of data storage medium that was used in early computers. It is a long strip of paper with holes punched in it to represent data. The punched paper tape was read by a punched paper tape reader, which converted the holes in the tape into electrical signals that the computer could understand. Punched paper tape was once a common input device for computers, but it has been largely replaced by other input devices such as keyboards and mice.
- D. Character reader is a device that reads characters from a document. It can be used to input data into a computer or to scan documents. Character readers are often used in applications such as optical character recognition (OCR) and data entry.
- E. None of the above is not the correct answer.