the order in which some switches are turned on
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Posted by laura on April 23, 2008, 1:19 am
Please log in for more thread options Hi all, I have an array of N switches . Initially all are OFF. Somebody turns them ON in some order. It is possible that more switches are turned ON in the same moment. I need a device which shows me the order in which the switches were turned ON. For instance the device should give me: 4,3,1,5,2 (this is the order in which the switches were turned ON). The way in which the output is shown in not important. It must be simple to read (by a human, computer, etc). It is important that the device is able to handle the turned ON (in the same moment) of the multiple switches. thanks, Laura | |||||||||||||
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Posted by Geo on April 23, 2008, 8:44 am
Please log in for more thread options Dismantle an old keyboard and remove the pcb. Connect your switches in place of the keys. The chip will output them in order off "typing". If it is a /design/ question then it is essential to state what the minimum time is between 2 switches being pressed as to if they are pressed together or one after the other. Geo | |||||||||||||
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