On a sunny day (Sat, 14 Mar 2020 13:59:11 +0000) it happened mm0fmf
 wrote in :

>It's a long, long, long time since I tried it (36 years ago) but ISTR
>compiling an ALGOL program on my DG Nova 1200 was an 11 pass operation
>using paper tape. i.e. 11 tapes in the compiler/assembler/linker/loader
>plus the intermediate tapes punched.

-> 2020 - 39 = 1981

I was having a lot of fun with the ZX80 in those days
 https://en.wikipedia.org/wiki/ZX80
  29 January 1980

I do remember connecting a printer to it (a Brother with thermal paper)
to print receipts for the TV repair shop I had at that time,
had to make a serial interface for that, even advertised that interface
in a big newspaper.
Written in ... ZX80 BASIC!
That ZX80 was really a game changer, very very good BASIC.
 https://en.wikipedia.org/wiki/IBM_Personal_Computer
 IBM PC came later: August 12, 1981.

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