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Saturday, January 14, 2012

A wonderful day down at the farm

Several weeks ago, Jim Somers from the CHM dropped in with a special request.

There was a young man (David) and his girl friend (Julie) who would like to visit the museum. The problem is he is blind.
Since the 1401 restoration room is the only place in the museum that has equipment that can be 'touched', Jim asked if he could schedule the vist for Saturday, January 14th which is one of our work days.


We told Jim that was no problem and bring David in.

The Wednesday before that date, we were working on the German 1401. It had several card failures.
Late in the day, the Connecticut machine decided to fail.

On Friday, I convinced Jim Hunt to join me at the CHM to try and get one of the machines up and running for Saturday.
 Jim Hunt fixing another IBM 1401 SMS cards.

Stan Paddock getting his finger stuck in some piece of equipment.

After spending the day working on the German machine, we were not able to make it work. We thought we were close to the answer when we started but were not successful

On Saturday, Ron Williams, Bob Edwards, Jim Hunt, Gary Feierbach, and myself came in early to attack the problem.
 Ron Williams working on the Connecticut machine's problem.
Bob Erickson working on a different problem.

Ron, Bob and myself worked on the Connecticut machine while Gary and Jim worked on the German machine.

Jim McClure, from the museum staff, was escorting David and Julie through the rest of the museum. At noon, I went to find them and let them know we were still down and maybe they should wait until after they had lunch to come in to the 1401 room. They said OK. 

When I returned to the 1401 room, Ron informed me that the Connecticut machine was back in operation.
I went back out on the floor and invited Dave and Julie into our room.

Understanding David's limitations, we gave him a modified tour where he was allowed to touch the machines involved and even inside of the IBM 1402 where the cards passed through rubber rollers into pockets.
David was given our sample core memory module and he could feel the actual ferric core beads.
We ran the 'Big Print' program for David and Julie and 'Powers of 2'.
David ran his fingers over his name punched onto an IBM punched card and was told how to decode the punched holes. He thought that was cool.
While he could not read the printout of 'Powers of 2', he was impressed by the noise of the IBM 1403 printer.

I hope David and Julie enjoyed the tour as much as we did presenting it to them.

Stan Paddock

Sunday, January 8, 2012

A special Visitor

On December 28, 2011, The Husman family came all the way from Northridge CA to visit the Computer History Museum at the request of their 10 year old son Glen.
This picture shows Glen, his younger brother and his father. His mother is busy taking pictures.

Glen was very interested in the IBM 1401 equipment. He showed me the programming he had done on his cell phone!

I had some work to do at the CHM and invited Glen to com back on Friday and I would teach him how to program the 1401. He and his mother accepted.


After a whiteboard session upstairs, Glen wrote a "Hello World" program on the IBM PC in the foyer.
He and his mother are shown above.

Glen then ran the program through the IBM 1401 simulator on the IBM PC.
The Glen ran "remote punch" to punch his object deck on one of the IBM 026 keypunches.
After he was shown how to load a program into the IBM 1402 card reader, he did so and the program ran as expected.

Glen was so excited with his success, he decided to write a program that read cards and put the data to the printer with a header for each line. There was an "(EOF)" card at the end he had to detect to stop the program.
This program also worked as designed.
Glen was fascinated that the IBM 1401 system has four "START" buttons so when he demoed his program, he used all of them.

I received the following E-Mail from Glen after he returned home.
I think I may have found a JAVA programmer to fix the problem with our ROPE programming environment!

Dear Stan,
    Thank you for teaching me how to program the IBM 1401 (Ancient) Computer. I enjoyed it very much. The Computer History Museum was, by far, the best museum I have ever been to. Thank you for inviting me back to program the IBM 1401. I will definitely like simulating, and programming for, the IBM 1401 at home. I will also like fixing that bug in the simulator, and, maybe adding a new feature, punching directly from the simulator program (so I can click "Punch" on the assembled code screen, and it will punch for me)! Speaking of which, I loved the remote punch feature! Thank you for inviting me.

Sincerely,
    Glen H.