vault backup: 2026-06-26 23:22:55
This commit is contained in:
@@ -48,7 +48,7 @@ quadrantChart
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```
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## 关联笔记
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- [[接口与通讯技术/8255A可编程并行接口]]
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- [[接口与通讯技术/8254定时计数器]]
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- [[接口与通讯技术/8259A中断控制器]]
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- [[接口与通讯技术/8251A串行通信接口]]
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- [[8255A可编程并行接口]]
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- [[8254定时计数器]]
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- [[8259A中断控制器]]
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- [[8251A串行通信接口]]
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+4
-4
@@ -384,7 +384,7 @@ create time: 2026-06-26 22:20
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---
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## 关联笔记
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- [[接口与通讯技术/8255A可编程并行接口]]
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- [[接口与通讯技术/8254定时计数器]]
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- [[接口与通讯技术/8259A中断控制器]]
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- [[接口与通讯技术/8251A串行通信接口]]
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- [[8255A可编程并行接口]]
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- [[8254定时计数器]]
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- [[8259A中断控制器]]
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- [[8251A串行通信接口]]
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+4
-4
@@ -375,8 +375,8 @@ create time: 2026-06-26 22:20
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---
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## 关联笔记
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- [[接口与通讯技术/8255A可编程并行接口]]
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- [[接口与通讯技术/8254定时计数器]]
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- [[接口与通讯技术/8259A中断控制器]]
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- [[8255A可编程并行接口]]
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- [[8254定时计数器]]
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- [[8259A中断控制器]]
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- [[接口与通讯技术/DMA控制器8237A]]
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- [[接口与通讯技术/8251A串行通信接口]]
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- [[8251A串行通信接口]]
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+3
-3
@@ -568,6 +568,6 @@ create time: 2026-06-26 22:20
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---
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## 关联笔记
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- [[接口与通讯技术/8255A可编程并行接口]]
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- [[接口与通讯技术/8254定时计数器]]
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- [[接口与通讯技术/8259A中断控制器]]
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- [[8255A可编程并行接口]]
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- [[8254定时计数器]]
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- [[8259A中断控制器]]
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+4
-4
@@ -425,7 +425,7 @@ create time: 2026-06-26 22:20
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> 解析:计数初值 = 1MHz / 1kHz = 1000 = 03E8H。控制字 36H 各位含义:D7D6=00 选择计数器 0,D5D4=11 先低后高读写,D3D2=011 方式 3(方波发生器),D0=0 二进制计数。先写低字节(E8H),再写高字节(03H)到计数器 0 的端口 20H。
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## 关联笔记
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- [[接口与通讯技术/8255A可编程并行接口]]
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- [[接口与通讯技术/8254定时计数器]]
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- [[接口与通讯技术/8259A中断控制器]]
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- [[接口与通讯技术/8251A串行通信接口]]
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- [[8255A可编程并行接口]]
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- [[8254定时计数器]]
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- [[8259A中断控制器]]
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- [[8251A串行通信接口]]
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