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bmcculla said:1) switch bounce happens because the metal part that moves when you press the switch doesn't stop when ith hits the other contact it bounces off disconnecting the switch for a short time before making contact again. This is a problem if the switch triggers a counter or similar digital logic because each bounce gets counted as a button press.
2) I'm not sure what you are asking. If you give a bit more information we can help more.
sonaiko said:bmcculla said:1) switch bounce happens because the metal part that moves when you press the switch doesn't stop when ith hits the other contact it bounces off disconnecting the switch for a short time before making contact again. This is a problem if the switch triggers a counter or similar digital logic because each bounce gets counted as a button press.
2) I'm not sure what you are asking. If you give a bit more information we can help more.
1) thanx
2) do u have any more detailed info or graphs i can use?
3) the preselector is a device to change from Decimal to BCD. it looks like the counter that u find on the old tape recorders!!!
bmcculla said:Are you talking about a physical switch that you press the buttons and little numbers on the display are mecanicaly changed to indicate a digital switch output. They seem to be called thumbwheel switches.