state machines , boolean equations , k-maps
0Boolean equations compared to k-map simplifications
glitch\spike\hazards , how to avoid combinational logic spikes .
just ok I think . could be better .
to implement XOR , EOR , exclusive OR for a lamp .
we need 2 SPDT ( single pole double throw ) switches .
Called Switch A , switch B .
for SW A , label each Contact A .....NOT A
for SW B , label each Contact B .... NOT B .
place both switches on the Ground side of the lamp .
Both sets of contacts should face each other .
The Pole of SW A is to ground .
The Pole of B connects to the ground side of the Lamp .
Wire contact A to contact NOT B .
Wire contact NOT A to contact B
we manually toggle the switches to complete the functionality .
Draw it up on paper . should be obvious it implements the XOR function NOTA.B + A.NOTB .
a connective to Logic for using relays can be made too .
we can implement combinational logic with
mechanical switches and relays .