Daisywhell typewriter emulating a TTY

Dave Babcock 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 
characters.   :-)


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...
> --Chuck

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