Hollerith punched cards about the same size as an airline ticket, developed from Jacqurd looms which programmed textile Mills.
Used up to the 70s when tape/discs in stacked layers, often seen in spy films of the era Ipcress file , later floppy the usb all same funtion, my old watch or phone can do what needed a room full of huge machines did just 50 years ago, the chip/wafer have enabled big data.Our grandchildren will laugh at pcs laptops iphones as wearable /implants take over
A card