Computers I have known


Obviously not all of the computers I've used are pictured here - just most of the old ones. I don't think one could get excited over a SPARCStation or one of the many IBM PC clones. Sorry, no photos of the first computer that I used, which was a PDP 11/40 running RSTS/E. The photos shown here were taken in the years 1979-1981. Click on the images to get the full-sized graphic image.

All photos © copyright as of the given date.

Commodore PET.
The first microcomputer I used was the Commodore PET way back at the end of my sophomore year in high school. Our school bought four of the 8K PETs, complete with chicklet keyboard and built-in tape drive. The photo here was taken at the 30th International Science and Engineering Fair, where I was exhibiting my work on "Computerized Chemistry". To the best of my knowledge this was the first commercially-produced microcomputer to be used in an exhibit at the ISEF.

Photo shown here is from a October 1981 presentation given to a delegation of educators from the People's Republic of China on a program I wrote that would have the PET collect and analyze gas chromatography data.

Apple II.
My first experience with the Apple II was when I was working for Dr. John W. Moore, at that time a chemistry professor at Eastern Michigan University. The Microcomputer Lab there is where both this photo and the one for the DEC 10 was taken. I got hooked on the Apple II, and bought myself a system in the summer of 1981. Back in those days a 64K computer with color graphics was a real thrill!

PDP 8/I.
The PDP 8 series was a very popular minicomputer put out by Digital Equipment Corporation. I worked on this machine as part of a high school research project back in the summer of 1979. The task was to connect this computer to the PDP 11/40 on campus and use it as a "superterminal" for such tasks as off-line storage (using paper tape!), graph generation using an X-Y plotter, and remote printer facility. In the photo I'm toggling in commands on the front panel - today's computer manufacturers have taken a lot of fun out of their products!

DEC 10.
The DEC 10 was a large mainframe computer which I worked on when at Eastern Michigan University. Note the old-fashioned modem on top of the terminal being used to connect to the machine. It was very sensitive to thunderstorms, so such so that the login messages would include the weather forecast, and the editor had a special "Save the world" feature activated by a single keystroke. I learned my first real high-level structured language (Pascal - I read Grogano's book) in order to write the adventure game Chemical Dungeons back in 1980 to run on the DEC 10. (This game is still available for the PC! Follow the link and in the Adobe document look for disk PC4603. One click and you'll download the game.)

Other computers used but with no photos to show for it are the IMSAI, Northstar Horizon, Atari, and the VAX 11.


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John K. Estell - 22 March 1997
estell@bluffton.edu