[GreenKeys] 1949 time division multiplex demo

[Jim Cooper]

On 28 Oct 2025 at 13:17, Harold Hallikainen via GreenKeys 
wrote:

> They did amazing stuff with mechanical and vacuum tube equipment.

But at least with that equipment it could be restored 
and/or reconfigured 50 years later ... 

who is going to be able to use anything from a 
surface-mounted and IC super-integrated chips 
in 50 years?   especially since almost everything 
now does its job with internal software which 
who would even know what it does in 50 years?

w2jc