1. Single chip microcomputer INT0 pin connection on a key, keys at one end of the ground, on the other end through resistor connected to the INT0, the counting of button is pressed, and in three eight digital tube display. Another common I/O pins connected a button to reset the count, when the count reaches 999 or reset button press, digital tube is zero, start counting again. 2. The hardware circuit requirements: MCU use P1 mouth driver three seven segment digital tube, a total of anode using P2.0- P2.2 choice for display of digital tube, external interrupt pin INT0 S1 (P3.2) connection on the buttons, used to interrupt count, external pins P3.5 S2 (T1) connection on the buttons, used for zero count.

外部中断计数设计
................\Keil文件
................\........\CXG
................\........\CXG.LST
................\........\CXG.M51
................\........\CXG.OBJ
................\........\CXG.c
................\........\CXG.hex
................\........\CXG.lnp
................\........\CXG.plg
................\........\CXG.uvopt
................\........\CXG.uvproj
................\........\CXG_uvopt.bak
................\........\CXG_uvproj.bak
................\单片机原理及应用课程设计报告（模板）.doc
................\课程设计Proteus仿真电路图
................\.........................\CXG.DSN
................\.........................\CXG.PWI
................\.........................\Last Loaded CXG.DBK

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．