I was going to say there is a great article about the Sinclair Scientific here: http://files.righto.com/calculator/sinclair_scientific_simulator.html http://fi

I was going to say there is a great article about the Sinclair Scientific here: http://files.righto.com/calculator/sinclair_scientific_simulator.html http://files.righto.com/calculator/sinclair_scientific_simul... And then I noticed who I'm replying to... Despite its flaws, this calculator was quite an achievement, doing everything it did with a ROM that holds only 320 instructions.