The operator terminals with Windows® CE Operating System offer the ease of use typically found in terminals, but add the performance level and openness expected on an industrial PC. They can be used with off-the-shelf SCADA applications and with proprietary applications written by the user. The CIB (Communications Interface Board), integrated in certain models, provides powerful communications support with its own processor, capable of handling all of the ESA protocols and some field buses. The CIB interfaces with the CE operating system via an OPC server and can be used by most CE application development software.