> Later cards were given a sequence number Card sorting (and arithmetic operations) predate computers. https://en.wikipedia.org/wiki/Unit_record_equipment http

> Later cards were given a sequence number Card sorting (and arithmetic operations) predate computers. https://en.wikipedia.org/wiki/Unit_record_equipment https://en.wikipedia.org/wiki/Unit_record_equipment > some of the old computer programmers would 'program' by collating pre punched card sequences. This is the origin of the ‘compiler’, which originally was closer to what we now call a linker: it assembled (hah) a program from a library of pre-defined sub-programs.