s77529.pdf The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid crystal display systems. It generates 255 Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial P

设计一部基于AT89C52单片机的LED点阵显示电子钟，课程设计word，电路图，程序-Design a Based on AT89C52 LED dot matrix display electronic clock, curriculum design word, schematics, procedures