74HC02,74HC04,74HC07,74HC126,74HC138,74HC245,74LS373等各芯片资料-74HC02, 74HC04, 74HC07, 74HC126, 74HC138, 74HC245, 74LS373 chips and other information

8位数码管动态扫描显示实验(显示不用库函数) *显示用指针直接访问GPIO端口的输出寄存器，形式GPIOD->ODR *延时delay_nms(5)时，显示不闪烁 *74HC138 A--P2.2--PE.0 B--P2.3--PE.1 C--P2.4--PE.2 *74HC573 D0~D7---PD[0..7] LE---PE.3 *by 追梦 2011-4-3-8-bit digital dynamic scan showed that the experimen

1 3 8 译码器实验,这个是单片机51系列写的- 138 decode use for 51 mcu