[Damian Peckett] has implemented an Apple ][, its 6502 processor, and a cassette port, all on an Arduino Uno ... a Mandelbrot set program from cassette -or in this case an audio file stored ...

The Arduino, on the other hand, is a microcontroller platform capable of only executing a single program at a time ... a relay for the Arduino Uno). Try a toggle switch instead, so you won ...

The Arduino board is a small-form microcontroller circuit board. At the time of this writing, a number of Arduino boards exist: Arduino UNO ... program is a sketch that lives on the Arduino board ...