利用74LS163的同步清零功能构成六进制计数器 画出状态图、写出归零逻辑表达式、画连线图
时间: 2023-08-05 13:03:42 浏览: 185
状态图如下所示:
```
+-----+ +-----+
+--+ Q0 +-----+ Q1 +--+
| +-----+ +-----+ |
| |
+-----+ +-----+
| CLR | | CLR |
+-----+ +-----+
| |
| +-----+ +-----+ +-----+ |
+--+ Q2 +-----+ Q3 +-----+ Q4 +--+
+-----+ +-----+ +-----+
```
其中,Q0~Q4 分别表示六进制计数器的五个输出位。
归零逻辑表达式为:
```
CLR = A + B + C + D + E
```
其中,A~E 分别表示计数器的五个输入位。
连线图如下所示:
```
+-----+
| |
+--+ CLR +---+
| | | |
| +-----+ |
| |
| +-----+ |
+--+ A +---+
| +-----+ |
| |
| +-----+ |
+--+ B +---+
| +-----+ |
| |
| +-----+ |
+--+ C +---+
| +-----+ |
| |
| +-----+ |
+--+ D +---+
| +-----+ |
| |
| +-----+ |
+--+ E +---+
+-----+ |
|
+-----+ |
| | |
+--+ Q0 +---+
| | | |
| +-----+ |
| |
| +-----+ |
+--+ Q1 +---+
| | | |
| +-----+ |
| |
| +-----+ |
+--+ Q2 +---+
| | | |
| +-----+ |
| |
| +-----+ |
+--+ Q3 +---+
| | | |
| +-----+ |
| |
| +-----+ |
+--+ Q4 +---+
| | |
+-----+ |
```
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