The tiny 2- by 2.5-in. QCard sports a 16-MHz Freescale 68HC11F1 microprocessor with 512 kbytes of flash and 128 kbytes of RAM. The Mosaic Industries MCU has 320 bytes of EEPROM, eight lines of programmable digital I/O, 8-bit analog-to-digital conversion, and dual RS-232/485 ports. A built-in interactive debugger, a multitasking executive, and device-driver libraries support applications written in C, Forth, or assembler. Pricing starts at $119.