Daisywhell typewriter emulating a TTY
dave at babcock-family.org
Wed Apr 10 13:14:40 CDT 2019
True, the 1620 Model 1 Model B typewriter (1st gen). The 1620 Model 2
used a Selectric (2nd gen). We're using the 3rd generation IBM electric
typewriter (Wheelwriter) with the 1620 Jr. (3rd gen 1620?). [I know
it's a stretch.]
The issue is that for Jr. we needed a reliable, robust, very low
maintenance device. The IBM 1620 Jr. will be used by the CHM Education
Department and needs to stand up to hands-on use without needed
difficult & expensive maintenance.
Here's the keyboard of our Wheelwriter-based IBM 1620 Jr. Console
And here is the printed output:
Note the slashed zero, flagged digits, and all of the 1620 special
On 4/10/2019 10:56 AM, Chuck Guzis via cctech wrote:
> On 4/10/19 10:35 AM, Dave Babcock via cctech wrote:
>> To all,
>> The Computer History Museum's IBM 1620 Jr. project has already done
>> this. We have converted an IBM Wheelwriter 1000 electric typewriter
>> into a computer terminal. The conversion consists of a custom PCB with
>> an Arduino Teensy 3.5 microcontroller which is physically installed in
>> the typewriter, electrically in-between the keyboard and typewriter
>> motherboard, with custom firmware.
> Aw, that's too bad! The original Model I (CADET) 1620 had a console
> typewriter (was it based on the IBM Model B electric?) that gyrated
> enough, particularly on carriage returns, that made you wonder if it was
> going to fly to pieces at any time. It was all part of the experience.
> What did you do about the 1620-specific keys? I don't think that record
> mark or R-S was a keytop legend ona Weheelwriter...
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