不外加任何器件,采用两片集成十进制异步计数器7490设计36进制计数器
最佳答案
要设计一个36进制计数器,可以使用两片集成的7490异步计数器来实现。下面是一个简单的电路设计:
```
+-------------------+
| 7490异步计数器 |
+-------------------+
| | | | | |
| 10 | 11 | 12 | 13 |
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+-------------------+
| | |
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+-------------------+
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| 14 | 15 | 16 | 17 |
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+-------------------+
| | |
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+-------------------+
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| 18 | 19 | 20 | 21 |
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+-------------------+
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+-------------------+
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| 22 | 23 | 24 | 25 |
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+-------------------+
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+-------------------+
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| 26 | 27 | 28 | 29 |
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+-------------------+
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+-------------------+
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| 30 | 31 | 32 | 33 |
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+-------------------+
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+-------------------+
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| 34 | 35 | 36 | 37 |
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+-------------------+
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+-------------------+
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| 38 | 39 | 40 | 41 |
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+-------------------+
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+-------------------+
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| 42 | 43 | 44 | 45 |
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+-------------------+
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+-------------------+
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| 46 | 47 | 48 | 49 |
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+-------------------+
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+-------------------+
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| 50 | 51 | 52 | 53 |
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+-------------------+
```
使用7490异步计数器可以计数到36,因为每个计数器的时钟周期为12个二进制位,所以每个计数器可以计数到36的12倍。例如,当计数器A计数到1时,计数器B计数到14,当计数器A计数到14时,计数器B计数到28,以此类推。