The I-7188 series controllers are designed for embedded systems that require high reliability. PC compatibility, compactness at a reasonable price. The controllers can be integrated into an OEM product as a processor core component. By building your product around I-7188 series controller you reduce the time from design to market introduction cut development costs minimize technical risks and deliver a more reliable product. I-7188 is the first generation product and I-7188XA. I-7188XB and I-7188XC are the second generation products. The major differences are communication ports digital I/O port and user defined I/O pins. Except I-7188 all I-7188XA/ XB/XC support I/O expansion bus. I/O Expansion Bus and Expansion Board The I/O expansion bus can be used to implement various I/O functions such as D/I, D/O, A/D, D/A, TImer/Counter, UART, flash memeory, battery backup SRAM, Asickey & other I/O functions. Nearly all kinds of I/O functions can be implemented in this bus. Our I/O expansion boards offer features in addition to those provided by I-7188XA/XB/XC embedded controller.