nec

Greetings, in trouble with search of datasheet on NEC C551E621C. If it correct of course, originaly installed in film camera from 1975, Yashica electro 35 GX, and becuase of it malfunction, logic in lolw light condition dont work correct. If possible, I would really like to understand what this...

Hello All, I am a young professional electrical engineer who has just started working in Automation field. We build customized panels including PLCs, HMIs, Pushbuttons, Lights, Relays etc., I have been searching for a reference codes and standards that can be helpful for designing and wiring...

I was wondering what would be required, or if its possible, to extract an existing program from an EPROM NEC D27128D? I use Microchip PICs and a PicStart Plus, but I doubt its compatible. I also realise the output might be in hex, but any helpful clues would be useful.