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This mini forum is intended to provide a simple means of discussion about the Lambda Electronics Ltd PC 8300 computer. If you want to share your own experience or memories, or add relevant information about this system: post a message! For other purposes like sales messages, hardware & software questions or information requests, please use our main forum.

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Monday 17th September 2018
Marcus (Sweden)

My first contact with computers, My friend had one that we played around with. It was branded Lambda, i dont remember model nmbr.

Friday 6th May 2016
Ronald (Denmark)$lfiSz_ZcCFw

Wednesday 17th June 2015
Robcfg (Spain)
Zona de Pruebas

You can find high quality scans and pictures of the Marathon here:$40$t$3953

Monday 26th November 2012
Sascha2000 (Germany)

It was possible to install different ROMs into the lambda to gain better ZX81 compatibility. I have made a multirom-board which can be seen here:$lH8igenBmuY$feature$watch_response

Wednesday 13rd July 2011
Dwayne Surdu-Miller (Canada)

The PC-8300 was distributed in Canada for a few years as surplus by Princess Auto. The manual included a little bit of English, but was mostly printed with Chinese block characters. The case and colour scheme are exactly as shown for Lambda Electronics PC-8300, though there was no such branding on the original box, the manual, or the computer.

Monday 9th August 2010

The Lambda was my first computer inherited from a friend who got an Amstrad 464 around 1983-84. I used it to type Basic programs from magazines. I only had it about a year before I got an Amstrad and never looked back

Wednesday 7th July 2010
Helge (Internet)
Open Source Demos

I have been looking for info about that marathon-thing, because it was my first computer, and i found some here (messed up site):

Monday 12th April 2010
Jostein Chr. Andersen (Sweden)

Can that it was under the Marathon name in Norway. I had one like this around 1982-83 (probably ''82) under the name Marathon 32K and bought it in Oslo.

Thursday 7th February 2008
Carsten Krogh (Denmark)

Well, the Lambda 8300 was distributed in Denmark - probably also the rest of the nordics. It was an exact ZX81 clone (first cloning that I am aware of?) and ran Sinclair software just fine.
Best rgds. from Denmark, and do keep up the good work!

Tuesday 11th September 2007
Murray Moffatt (New Zealand)

The Lambda PC 8300's keyboard looks almost identical to the Panasonic JR-100 at

Same style and layout and everything! This has to be more than just a coincidence...

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