Integrating midsized LCDs

摘要

With the growing demand of better user interfaces in compact commercial, industrial, and medical applications, midsized, 4-to 10-in. QVGAs (quarter-video-graphics arrays) and VGAs are replacing the traditional character or small graphics LCDs. However, this type of application usually uses microcontrollers, entry-level microprocessors, or DSPs, and the integration of LCDs requires both hardware upgrades and software efforts. Several common ways are available for driving midsized LCDs, and designers must compare the topology, hardware, and software requirements, as well as the costs of these approaches, especially for microcontroller-based systems.