更新 README.md

528ddbcd · 李川 · bedc9636 · 528ddbcd
--- a/README.md
+++ b/README.md
 # 说明
 定时计数器
 # 原理图
-![8086 微机系统](https://www.codecode.net/engintime/Dream-Logic/Project-Template/Microcomputer/Lab003/raw/master/8253_test.dlsche.svg)
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+![8253单独测试电路](https://www.codecode.net/engintime/Dream-Logic/Project-Template/Microcomputer/Lab003/raw/master/8253_test.dlsche.svg)
+![8255定时计数器波形发生电路](https://www.codecode.net/engintime/Dream-Logic/Project-Template/Microcomputer/Lab003/raw/master/mcu.dlsche.svg)
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