| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | DM74LS192N | 54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks | 158K |
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| 2 | DM74LS192N | 54LS192/DM74LS192 Up/Down Decade Counter with Separate Up/Down Clocks | 158K |
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| 3 | DM74LS192N/A+ | Synchronous Up/Down Counter | 236K |
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| 4 | DM74LS192N/B+ | Synchronous Up/Down Counter | 236K |
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