29 Jan
2023
29 Jan
'23
5:37 a.m.
On 2023-01-28 11:10 p.m., Chuck Guzis via cctalk
wrote:
No, Chuck is correct the 1052 used a modified 024 keyboard, even through you would think
it would have been an 029.
Marc recently did a video on a keypunch keyboard, the 1052 one looks much the same.
Mine differs a lot, the Spectra 70/752 used a Selectric mechanism, totally different to
the keypunch keyboard.
The Selectric keyboard is designed around doing a print cycle while the electric keypunch
keyboard seems to be power driven to reduce
or eliminate double-keying errors as the primary motive. I think, but am not certain.
Sellam asked for a few photos of my 70/752 recreation project so here are some I just
took. As I said, it's still a WIP with lots to do.
http://www.surfacezero.com/g503/uploads/612/RCA_Spectra_70-752_keyboard_rec…
http://www.surfacezero.com/g503/uploads/612/RCA_Spectra_70-752_keyboard_rec…
http://www.surfacezero.com/g503/uploads/612/RCA_Spectra_70-752_keyboard_rec…
It's running, with the LEGO motor at the voltage indicated. The microswitch clevis
rods will be cut to the right size once the storage bar is made.
Also the 3D test prints of brackets, clutch and other parts etc. in the bags. All printed
parts on the thing are white PETG.
Note there is an added bit 7 bail interposer, spring return frame, clutch on the inside of
the modified right frame, RCA-style mounting brackets,
storage bar pivot rod, AC motor (needs a front bearing bracket made or I might just cut up
the gearbox casing on it).
Steve.
On 1/28/23 17:34, Steve Malikoff via cctalk
wrote:
The keyboard on a 1052 is a keypunch keyboard I believe it is the same
as the 029. Chuck said
How does your setup differ form the 1052 keyboard? I know that uses a
modified 024 keyboard, so interposers.
Under DOS/360, a user program could write a CCW string to ring the 1052
bell. If that CCW string included a TIC back to the bell-ring CCW, the
bell would just keep ringing with the keyboard locked out.
Fun and games, from very many years ago.
--Chuck
