Make your own 51 development board. With self - restoring fuse, test safety, 40Pin lock socket is suitable for 4-40 pin chip, free to configure power pin. Board resources: 1. 6 highlighted digital tube display (digital and letter display) 2. 8 independent high-quality keys (2Pin) (input of human-computer interface) 3. 8 highlighted leds (running horse light, indicator light, traffic light, etc.) 4. Standard RS232 communication interface (PC communication) 5. Integrated infrared receiving head (high sensitivity) 6. The remote control can be used to simulate the remote control. 7. Buzzer (alarm and sound cues) 8. All the way relay output 9. EEPROM 24C02 (data storage) 10. Adc 0832 converter interface (analog conversion) 11. DS18B20 interface (precision temperature detection) 12. USB power supply, with self - restored fuse protection 13. Install quality power switch 14. The crystal oscillator adopts the method of plucking, which can be used in different frequency 15. DC motor interface (directly connected to small power DC motor) 16. 4 phase stepping motor interface (direct access) 17. Audio speaker interface (direct access can play music, sound wave) 18. Classic reset circuit 19. ISP 10Pin download line interface 20. Standard parallel port download line

FrequenzzaehlerV0_1

...................\51new.txt
...................\Der Aufbau eines kleinen Frequenzz刪ers ist dank der heutigen Atmel AVR Controller oder aber auch der Mikrochip PIC Controller.doc
...................\EagleLayoutFrequenzcounter
...................\..........................\Frequenzcounter.brd
...................\..........................\Frequenzcounter.sch


...................\SourceCodeV0.1
...................\..............\Frequenzz刪ler.pnproj
...................\..............\main.c
...................\..............\makefile
...................\..............\timer.c
...................\..............\timer.h
...................\..............\usart.c
...................\..............\usart.h

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