Introduction - If you have any usage issues, please Google them yourself
File name: test010.c* functions: external interrupt 1 edge triggered negative experiments.* Hardware requirements: 1.CPU Model: AT89S52* 2. Crystal: 12.000MHz* 3. Shorted with jumper caps BEEP_P1.3* 4. Shorted with jumper caps KEY3_P3.3* 5. With a short jumper cap Then LED11__P1.7* Author: POWER* Date: December 12, 2006