![Tetris on a Credit Card Terminal](http://randomvariations.com/wp-content/uploads/2014/12/tetris-300x224.jpg)
At VCF MidWest this fall, I demonstrated how I had reverse engineered a credit card terminal and reprogrammed it to run CP/M. While there, there were several discussions of what to do next. During these conversations, I realized that by turning the terminal sideways, I could use it as a display for Tetris.