| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | IS82C54 | CMOS Programmable Interval Timer | 146K |
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| 2 | IS82C54 | CMOS Programmable Intervel Timer | 396K |
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| 3 | IS82C54-10 | CMOS Programmable Interval Timer | 146K |
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| 4 | IS82C54-10 | CMOS Programmable Intervel Timer | 396K |
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| 5 | IS82C54-10Z | CMOS Programmable Intervel Timer | 396K |
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| 6 | IS82C54-12 | CMOS Programmable Interval Timer | 146K |
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| 7 | IS82C54Z | CMOS Programmable Intervel Timer | 396K |
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