
Punch cards, also known as punched cards or perforated cards, were a dominant medium for data storage and processing from the late 19th century well into the mid-20th century.
Each column held one character, which could be interpreted using IBM’s proprietary codes.

Punch cards, also known as punched cards or perforated cards, were a dominant medium for data storage and processing from the late 19th century well into the mid-20th century.
The process of identifying and fixing issues in computer programs is known as debugging.

The term “debugging” in computer science has a fascinating history rooted in both literal and metaphorical origins. The process of identifying and fixing issues in computer programs is known as debugging, a term that dates back to the early days of computing.