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(1 PC) HD6303RP HITACHI Microcontroller, 8-Bit, 6800 CPU, 1MHz, CMOS, PDIP40

(1 PC) DS89C420-MNG DALLAS IC MICROCONTROLLER 8-BIT 8051 CPU CMOS DIP 40PIN

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(1PC) P87C575EBPN Microcontroller, 8-Bit, OTPROM, 8051 CPU, 16MHz, CMOS, PDIP40