I found this electronic component in the road, but I can't tell what it's tend to be because I'm not an electronics guy, can you please tell me what is it ? enter image description here

Thank you in advance

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    \$\begingroup\$ Which component are you asking about? or do you mean the whole board? If the whole board, there's a big hint on the label. Just identify the serial pins, hook up a terminal, and ask it. \$\endgroup\$ May 30, 2016 at 13:18
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    \$\begingroup\$ And a quick search yields this potentially useful link : d.pcnews.at/ins/cds/005/prg/DEB/mon552.asm \$\endgroup\$ May 30, 2016 at 13:24
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    \$\begingroup\$ Looks pretty cool what ever it is. \$\endgroup\$
    – Alex
    May 30, 2016 at 19:25
  • \$\begingroup\$ Lots of replaceable ICs with fancy chips in fancy slots. \$\endgroup\$
    – Bradman175
    May 31, 2016 at 0:33

1 Answer 1


It's an older type of small microcomputer with program stored in battery-backed RAM. It has a serial interface and an 8-bit 8051-core processor.

Not very amazing these days. It has a static 32K x 8 RAM. You can probably talk to it via that 2x5 port on the lower right-hand side by the MAX232. Probably powered via the grey terminal block.


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