The IBM 1401 (1960)
The replacement for Electric Accounting Machines (Tabulators)
Access mechanism for 1405 disk drive.
It would take a few DAYS to replace a disk if there was a head crash.
Here is a sample of SPS, the Symbolic Programming System for the 1401
Other 'languages' for the 1401 included: RPG (Report Program Generator)
and FARGO (Fourteen-oh-one Automatic Report Generating