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Intel 8051OKI M80C51-57 microprocessors
AMD Fujitsu
Intel P8051AH OKI M80C51-57
Siemens Signetics SCN8051H CCN40 / SCN8051HCCN40
USSR KR1816VE51

Intel 8051OKI M80C51-57 microprocessors
OKI M80C51-57

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