Why not? While sed is chuggng away at assembling your instructions you will have plenty of time to work on the problem. Just bulid a device that plugs into the

Why not? While sed is chuggng away at assembling your instructions you will have plenty of time to work on the problem. Just bulid a device that plugs into the serial port of your computer, run your sed-word amalgamation in a shell on the serial tty. Configure your device to interpret the ascii sequences from the serial terminal as pixels and output them as physical dots of light. Now for bonus points you can redesign the communication protocol to be more compact.