(Topic ID: 190121)
Linked Games
Cyclone
Williams, 1988
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Banning, CA
Think of the lamp matrix like a light bulb with a switch on each side of it. Both switches have to be turned on for the bulb to light.
The column wires provide what you're calling power. It is a pulsed signal that alternates across the columns. The rows then provide a path to ground. The row signal is also pulsed to match the specific lamp that needs to be turned on. So the computer knows when column 3 is pulsed and it if wants to turn on the lamp at col 3, row 3 it pulses row 3 low at the same time as the column is pulsed high. So power from the column and ground from the row.
F1 would be the 18V for the controlled lamps.
Quoted from harryhoudini:Really appreciate the detailed information, I am starting to understand the schematics much more. Love the logic probe.
I really don't know how people get by without one. A scopes even more fun. 
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