3 ms·
The first six columns of IBM cards used for COBOL programming had sequence numbers that could be used to validate that program lines were in order.
by donarb 10y ago
The first six columns of IBM cards used for COBOL programming had sequence numbers that could be used to validate that program lines were in order.
- joezydeco 10y agoI'm curious what % of HN readers have ever written a program with line numbers...
- Zardoz84 10y agoZX Spectrum +3 user here
- rurban 10y agoEven punch cards, but more teletype-style https://en.wikipedia.org/wiki/Punched_tape https://en.wikipedia.org/wiki/Punched_tape The punchcards were considered uncool then, the tape was much better.
- fratlas 10y agoOur highschool software teacher forced us to write at least one program in a language that used line numbers to give us perspective. Great teacher.
- flashman 10y agoI'm curious what percentage have never done so, but would still recognise: > 10 PRINT "HELLO WORLD" > 20 GOTO 10