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The Wiring hardware is based on the Atmel atmega128 microcontroller, a very powerful device that suits from the simplest tasks to the most challenging requirements and future needs for prototyping interactive artifacts, connectivity and expansion. The table below shows a comparison between The Wiring hardware and other prototyping systems.

| Wiring hardware (Wiring I/O board and WiringMini) | BasicX | BasicStamp | PIC16F876 | atmega8 / atmega168 (Arduino)
Digital I/O Pins | 53 | 16 | 15 | 22 | 11
Memory | 128K | 32K | 2K | 14K | 8K/16K
Analog inputs | 8 | 8 | n/a | n/a | 6
External Interrupts | 8 | n/a | n/a | 1 | 2
Hardware serial ports | 2 | 1 | 1 | 1 | 1
USB | yes | no | no | no | yes
Power | External 7-12V generic adapter or through the USB when connected to a computer | Requires power regulator circuit + adapter | Requires power regulator circuit + adapter | Requires power regulator circuit + adapter | External 7-12V generic adapter or through the USB when connected to a computer
PWM (analog) outputs | 6 | n/a | n/a | 2 | 3
Programming language | Wiring | basic | basic | basic | Wiring
OS Supported | Windows, Mac OSX, Linux | Windows, Mac OSX | Windows | Windows | Windows, Mac OSX, Linux