24 Jun
2007
24 Jun
'07
4:03 p.m.
On 24 Jun 2007 at 22:18, Gordon JC Pearce wrote:
I used to fit microwave links onto the tops of tall
multi-storey
buildings. The lift controllers I saw tended to run from a small rack
the size of a MicroVAX 3300, up to several wardrobe-size racks full of
relays.
Let's not forget interesting control systems in other devices, such
as jukeboxes (Seeburg used core memory, I believe), scoreboards and
combination actions in pipe organs.
Cheers,
Chuck