Since the microcontroller 51 of I/O 28 eloquence, and sometimes can not meet the multi-task, complicated task, so use 74H165 and 74H595 achieve I/O port expansion.

12、单片机IO扩展\74H165\74H165接线图.jpg
................\......\程序\main.c
................\......\....\pro
................\......\....\pro.hex
................\......\....\pro.M51
................\......\....\pro.uvopt
................\......\....\pro.uvproj
................\......\....\STARTUP.A51
................\...595\595LED\main.c
................\......\......\pro
................\......\......\pro.hex
................\......\......\pro.M51
................\......\......\pro.uvopt
................\......\......\pro.uvproj
................\......\......\STARTUP.A51
................\......\74H595控制LED接线图.jpg
................\......\74HC595.pdf
................\......\.......驱动静态数码管\C版\led
................\......\.....................\...\led.c
................\......\.....................\...\led.hex
................\......\.....................\...\led.M51
................\......\.....................\...\led.uvopt
................\......\.....................\...\led.uvproj
................\......\.....................\...\STARTUP.A51
................\......\.....................\接线图.JPG
................\......\.....................\汇编\HC595_LED
................\......\.....................\....\HC595_LED.asm
................\......\.....................\....\HC595_LED.hex
................\......\.....................\....\HC595_LED.M51
................\......\.....................\....\HC595_LED.uvopt
................\......\.....................\....\HC595_LED.uvproj
................\......\双595驱动点阵\C\595-LED
................\......\.............\.\595-LED.hex
................\......\.............\.\595-LED.M51
................\......\.............\.\595-LED.uvopt
................\......\.............\.\595-LED.uvproj
................\......\.............\.\LED_Num.c
................\......\.............\.\STARTUP.A51
................\......\.............\Thumbs.db
................\......\.............\接线演示图.JPG
................\......\74HC595驱动静态数码管\C版
................\......\.....................\汇编
................\......\双595驱动点阵\C
................\...165\程序
................\...595\595LED
................\......\74HC595驱动静态数码管
................\......\双595驱动点阵
................\74H165
................\74H595
12、单片机IO扩展

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