Summary of Digital Alarm Clock Schematic using pic microcontoller
The article discusses various aspects and projects related to digital alarm clocks, including schematics, features, and implementations using microcontrollers like the 8051. It highlights common configurations such as using common cathode displays with segments connected in parallel and individual cathodes controlled via transistors. The article references digital clock kits, FPGA projects, and LCD-based designs, providing a foundational overview for building or understanding digital alarm clocks.
Parts used in the Digital Alarm Clock:
- Common cathode 7-segment displays
- Transistors (for display cathode control)
- 8051 microcontroller (or equivalent MCU)
- LCD display (for some versions)
- Alarm sound output device (buzzer or speaker)
- Resistors (for current limiting and biasing)
- Capacitors (for filtering and timing)
- Crystal oscillator (for clock timing)
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is display is common cathode (the cathode of all segments joined to each other) and connect as follows : anode segment ‘a’ of each of the displays are connected together. anode segment ‘b’ of each of the displays are connected together, the anode of the segment ‘c’ of each of the displays are connected together …. and so on with all the segments. And cathode (common) of each display separately to a different transistors. Continue reading Digital alarm clock project …
For more detail: Digital Alarm Clock Schematic
