On Fri, 27 Oct 2017, Clem Cole wrote:
And to simplify that ... s/operating systems/SW/
Not to mention HW... I know how a POTS telephone works, but a cellular?
Only vaguely... Ditto B/W television vs. colour. And I stopped
maintaining my own cars years ago; about the onpy thing I recognise under
the bonnet these days is the engine.
Dave Horsfall DTM (VK2KFU) "Those who don't understand security will