19 Jun
1998
19 Jun
'98
2:07 a.m.
<
<> And (though no doubt I'll find I'm wrong when I look at those web pages
<> I thought Z3 was a relay machine, not electronic.
<
<> [Distinction. Relay - switching is performed by moving parts of the
<> circuit. Electronic, whether tubes or solid state, switching acts
<> directly on the electrons (or holes), hence the term]
Mechanical: man or motor powered, bars cams, wheels
Electric: Relays, steppers, solonoids and contacts has logic tree.
Electronic: uses active devices, tubes, transistors, ICs some types of
diodes and neon filled tubes.
Allison