computer systems I have used

PDP8

50 years ago, at 17 years of age I scratched my first programs in Basic for the PDP-8 on special punch cards.

IBM 360

1971 - 1973, during my studies physics at Delft Technical University I learned to program in ALGOL and PL1

Nascom 2

1981 I build my own Nascom 2, and created one of the first computerized telex machines, using Nascom basic and the infamous Nascom editer

Harris 100

1983 I wrote a full accounting system in FORTRAN that was running on a Harris 100 computer.

HP 120

1984 I got employed by the Kuwait Petroleum Refinery in Rotterdam.

my first job was the creation of interactive input screens in HP basic to replace batch punch-card input for the batch IBM system.

IBM System/38

At Kuwait Petroleum I was maintaining their batch oriented COBOL and RPGIII programs running on IBM in house hardware and in service at IBM Nederland.

The legend is that one owner of Kuwait Petroleum was sitting next to Ken Thompson during a long international flight. The interesting result was that from then on managment was forced to leave the IBM eco system and move all systems over to AT&T 3B2 systems running UNIX. This totally changed my life and carriere.

SCO Xenix on the IBM Personal Computer

Soon we started to use UNIX workstations running SCO on the IBM PC. At some point we met with Andrew S. Tanenbaum, and shortly I was using an early version of Minix. Very soon however, Linus posted the first version of Linux to the minix usenet group, which I started using on my personal IBM Clone at home, and later also in the office.

Since the early 1990's I have been a free lance consultant/systems designer/coder/trouble shooter in the Linux and UNIX universe

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