| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74LS193 | Synchronous 4-Bit Binary Counter with Dual Clock | 75K |
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| 2 | 74LS193 | Synchronous Up/Down 4-bit Binary Counters(dual clock lines) | 107K |
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| 3 | 74LS193 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | 282K |
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| 4 | 74LS193DC | Synchronous Up/Down Counter | 131K |
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| 5 | 74LS193PC | Synchronous Up/Down Counter | 131K |
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| 6 | 74LS193SC | Synchronous Up/Down Counter | 131K |
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