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Heathkit do-it-yourself electronics

All of man’s progress has stemmed from ideas, ideas held by men and women who pioneer new concepts. The provocative ideas of yesterday are the realities of today that make our daily tasks easier,...

The 8051 89C52 80C31 Page

Build your own a programmer for writing intel-HEX file to the 89C51, 89C52 and 89C55, PCB file included. The prototype board may be builtusing universal PCB with point-to-point soldering.

Graphic Equalizer

In the Graphic equalizer, the input signal is sent to a bank of filters. Each filter passes the portion of the signal present in its own frequency range or band. The amplitude passed by...