Drahtlose Kommunikation über die serielle Schnittstelle. Der Author schreibt:
“ In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card.“ http://sci-toys.com/scitoys/scitoys/computers/radio/computer_controlled_transmitter.html
