The Keil MCB900 Evaluation Board is a versatile and flexible prototype board for the Philips LPC900 microcontrollers. It connects to the COM port of your PC. The MCB900 includes the Keil uVision LPC Development Studio (a free 4KB-limited version of the Keil 80C51 compiler) which allows you to create and debug application programs. Your application can be programmed into the on-chip Flash of the P89LPC935 using FlashMagic. Since the P89LPC935 is a superset of most LPC900 devices, you can easily use the MCB900 to create application programs for any of these devices by avoiding those features of the LPC935 which are not included in the device you use. The kit also comes with a free LPC936 device sample (w/ 16KB on-chip Flash) in PLCC28 and a free LPC938 device sample (w/ 10-bit ADC) in PLCC28 which can be plugged into the MCB900 instead of the LPC935.