This is a brief introduction to a future video about the Mark video game that I recently bought, this is the same as I had as a kid, and I'll try to get it running and show some of the games I played some 40 years ago.
Technology was primitive in these, they are today known as PC-50x based systems, and they where plentyful in the mail order industry back then. https://en.wikipedia.org/wiki/PC-50x_Family
