1Burr Brown Corporation. DAC7612- Dual,12- Bit Serial Input Digital - to - Analog Converter[ S/OL]. June, 1999[2008 - 5 - 23]. http://www. Zlicsearch. com/s - DAC7612. html.
2Allegro Micro Systems Inc. 3955 - Full bridge PWM Micro- stepping Motor Driver[S/OL]. Data Sheet 29319. 41[2008 - 5 - 31]. http://www. zliesearch. cam/s - 3955. html.