9 Jun
2018
9 Jun
'18
3:51 a.m.
On Fri, 8 Jun 2018, Doug McIlroy wrote:
Under the keyboard was remarkable mechanical crossbar
encoder that
dripped machine oil. {...]
It may interest some here that that crossbar arrangement, along with the
distributor and its selector magnets, actually form a hardware shift
register...
Here's a Gootoob video (11m): it's a mechanical marvel!
http://www.youtube.com/watch?v=HcMHam54EOI
-- Dave VK2KFU, who was into RTTY once