This circuit is used to display the number of pulses occurred per minute on the PC desktop.we can use this to calculate frequency of the signal.
Working: i will calculate the signal peaks every minute and i will send that information using wireless protocol(Gigbee/GSM). on the other end i will receive by the same wireless device and i will send the same data to RS232 port of a PC. You can monitor the data on Hyper-terminal.
NOTE: i haven't indicated any wireless device. that will be connected to DB9 port.
More information is prohibited here on this topic.
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