| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | DM7490A | Decade and Binary Counters | 48K |
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| 2 | DM7490A | Decade, and Binary Counters | 180K |
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| 3 | DM7490AJ/A+ | Asynchronous Up Counter | 244K |
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| 4 | DM7490AN | Decade and Binary Counters | 48K |
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| 5 | DM7490AN | Decade and Binary Counters | 136K |
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| 6 | DM7490AN/A+ | Asynchronous Up Counter | 244K |
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| 7 | DM7490AN/B+ | Asynchronous Up Counter | 244K |
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