Description: Commonly used instrument in the keyboard LED display human-computer interaction techniques are analyzed. Presents a Smart LED keyboard from the display chip HD7279A circuit composed of human-computer interaction. The circuit has a simple and less external components, small size. Features strong functions, the use of the device simplifies the instrumentation in the human computer interface circuit.
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- [passworddianzi] - At SCM Product design, human-machine int
- [6] - Use of DS1302, the preparation of clock
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