P8255A-5 Integrated Circuit - CASE: DIP40 MAKE: Intel

M5L8255AP-5 Integrated Circuit - CASE: DIP40 MAKE: Generic

D8279C-5 NEC INTEGRATED CIRCUIT DIP-40

WD2797A-PL Integrated Circuit - CASE: DIP40 MAKE: Generic

P8255A-5 INTEGRATED CIRCUIT P8255A-5 DIP-40 ''UK COMPANY SINCE1983 NIKKO'

82C55AC5 Integrated Circuit - CASE: DIP40 MAKE: Generic

D8237A5 Integrated Circuit - CASE: DIP40 MAKE: INTL

SC87C51CGN40 Integrated Circuit - CASE: DIP40 MAKE: Generic