What were punch cards and how did they change business?

P H Grinyer MBCS shares his memories of punch cards, their uses, evolution and a family celebration.

Post #500: Homage to the punch card wreath –

History

Punched card - Wikipedia

Loyalty Card Maker, Custom Punch Cards - MustHaveMenus

IBM advertising in 1934 spoke to the importance of punched cards (or Hollerith cards) for storing, retriev…

The End of Punch Cards - Dave Margulius On Climate

Punch Cards Hole Punch Reward Cards Classroom Student Home - Temu

Selecting the Best Type of Time Clock for Your Business

20+ Best Punch Card Templates for Small Businesses