A. Hole
B. Key stroke
C. Key punch
D. Scanning
✅ The correct answer is option C.
In punched card system, holes are punched by device are called Key punch. Punch cards also known as Hollerith cards and IBM cards are paper cards containing several punched or perforated holes that were punched by hand or machine to represent data. These cards allowed companies to store and access information by entering the card into the computer.
In punched card system, holes are punched by device are called Key punch. Punch cards also known as Hollerith cards and IBM cards are paper cards containing several punched or perforated holes that were punched by hand or machine to represent data. These cards allowed companies to store and access information by entering the card into the computer.