Four separate manuals concerning IBM Electric Punched Card Accounting Machines held together into a single tome. The first manual is Principles of Operation, Card Punch Type 24, Printing Punch Card ...

Forty years ago this month, I started my first job in the PC industry. When I signed on, I thought I’d be writing a manual for a popular Apple II word processing program. Instead, I wrote one of the ...

For much of the 20th century, data was entered into data processing machines using punched cards. This is a machine for punching such cards manufactured by International Business Machines Corporation ...