[tnmoc] Selectric RPM part 2

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Peter’s had a meter on the Selectric that is at TNMOC and reports an approximate mean of 500 RPM for the op shaft.  That gives us 0.120 seconds per cycle. Slower than the Wikipedia figure.  A good job he measured it if there is any chance there might be a problem in the 1131 from …

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[tnmoc] Selectric RPM

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Posted by leny on

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Real Life™ again. If it is any comfort I’m doing a lot better at getting to port and safety when this particular well known storm blows than many similarly disabled people. Been through the Theory of Ops and Adjustment Theory manuals.  The nearest we get to an RPM is the motor to cycle shaft / …

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[tnmoc] Tricky Switches

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[tnmoc] Tricky Switches

I’m trying to workout the exact coding needed for CB RESP on the test device. Now my memory is I was told all the carriage events listed in the circuit diagram fragment below are signaled. However, that doesn’t sit well with the wiring for them being in series. An email discussion with Olly last night …

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[tnmoc] 1053 pinout

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I’ve been correcting the pin assignments for the Arduino after re-reading pages ZA101 and ZW101 of the 1131 & 1153 circuit diagrams which you can download from http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/1130/fe/1131-B/. From the table on the top left of page ZA101 you will note that all connections lead to or from ZW101. This is in turn the circuit …

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Here we go

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I received a letter from Ms McAvan recently in which she forwarded the Commission’s reply to her question. Two things are clear from this: The Commission are plainly not in a position to do anything about Microsoft’s intent, or what it may do to the market. Until there are ARM PCs being shipped and there …

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