http://www.henkessoft.de/Roboter/Rob...Mindstorms_NXT
Technical specifications

* 32-bit ARM7 microcontroller, 256 Kbytes FLASH, 64 Kbytes RAM
* 8-bit AVR microcontroller, 4 Kbytes FLASH, 512 Byte RAM
* Bluetooth wireless communication (Bluetooth Class II V2.0 compliant)
* USB full speed port (12 Mbit/s)
* 4 input ports, 6-wire cable digital platform (One port includes a IEC 61158 Type 4/EN 50 170 compliant expansion port for future use)
* 3 output ports, 6-wire cable digital platform
* 100 x 64 pixel LCD graphical display
* Loudspeaker - 8 kHz sound quality. Sound channel with 8-bit resolution and 2-16 KHz sample rate.
* Power source: 6 AA batteries