产品详情
说明： 用外部中断测频率：从P3.7端口引入频率，利用下降沿触发外部中断测一个波形的周期，通过四段数码管显示测试数据
(Measuring the frequency of use of external interrupt: P3.7 port from the introduction of the frequency of use of external interrupt falling edge trigger a wave measurement cycle through four digital display test data)
(Measuring the frequency of use of external interrupt: P3.7 port from the introduction of the frequency of use of external interrupt falling edge trigger a wave measurement cycle through four digital display test data)
文件列表：
外部中断测频率
..............\3
..............\3.hex
..............\3.lnp
..............\3.lnp.DSN
..............\3.lnp.PWI
..............\3.lnp.SDF (Can't open)
..............\3.M51
..............\3.Opt
..............\3.plg
..............\3.Uv2
..............\Last Loaded 3.lnp.DBK
..............\Text1.C
..............\Text1.LST
..............\Text1.OBJ
..............\3
..............\3.hex
..............\3.lnp
..............\3.lnp.DSN
..............\3.lnp.PWI
..............\3.lnp.SDF (Can't open)
..............\3.M51
..............\3.Opt
..............\3.plg
..............\3.Uv2
..............\Last Loaded 3.lnp.DBK
..............\Text1.C
..............\Text1.LST
..............\Text1.OBJ
