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it shoul accept 10 different digital signals as trigger event to generate a tone. each tone should be unique.

2006-10-09 00:07:11 · 1 answers · asked by Anny 1 in Consumer Electronics Other - Electronics

1 answers

Consider a DTMF system as used in telephones.
There are a total of 16 keys available.

2006-10-09 06:07:28 · answer #1 · answered by Warren914 6 · 0 0

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