FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A card reader is a data input device that reads data from a card-shaped storage medium. The first were punched card readers, which read the paper or cardboard punched cards that were used during the first several decades of the computer industry to store information and programs for computer systems.

Detailed explanation-2: -A card reader is a data input device that reads and writes data from a card-shaped storage medium. A card reader is a hardware device.

Detailed explanation-3: -A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards.

Detailed explanation-4: -These are machines that that punch holes in stiff paper cards in selected positions within fixed rows and columns to record information that can be read back or interpreted later by other machines called card readers, which are connected to or integrated with tabulators, computers, or other devices.

Detailed explanation-5: -Many early digital computers used punched cards as the primary medium for input of both computer programs and data. While punched cards are now obsolete as a storage medium, as of 2012, some voting machines still used punched cards to record votes. They also had a significant cultural impact.