On 02/01/2020 22:22, NY wrote:
> The advances of technology in those 40-odd years have been staggering,
> but then they were just as staggering in going from the first computers
> used at Bletchley Park to the computers of the mid-70s.

Transitors and then integrated circuits were the key to transforming a
Bletchely style valve computer to a Z80....

Audio tapes - or at least wire recorders - already existed and non
volatile storage developed from delay lines to magnetic cores to tape
and then to disk.

Solid state non volatile storage is just a development of ordinary
static RAM with an inbuilt 'battery'

ALL of this depends on access to theoretical models of quantum behaviur
AND to acces to increadibly precise machine tools to do wafer level
fabrication.


--
A lie can travel halfway around the world while the truth is putting on
its shoes.

--- SoupGate-Win32 v1.05