"基于80C51单片机的LED点阵汉字显示屏设计与开发"

The graduation thesis titled "Design of Dot Matrix Chinese Character Display Screen based on MCU" introduces the design and development process of a 16x16 dot matrix LED electronic display screen using four 16x16 dot matrix LED display modules. The core of the device is the 40-pin MCU 80C51 produced by ATMEL Corporation. The display screen is capable of showing four Chinese characters, with the control system being based on this MCU. The screen is driven by a row driver 74LS138 and eight column drivers 4049, allowing for dynamic display of characters. The thesis details the hardware design concept of the LED dot matrix display, the functions and principles of each part of the hardware circuit, the corresponding software programming, as well as user instructions. Key words include 80C51 MCU, LED, dot matrix display, and dynamic display. LED dot matrix displays are a rising display technology, consisting of multiple individual LED light-emitting diodes packaged together. These displays are commonly used to show numbers or symbols, such as time, speed, or system status. The design presented utilizes 16x16 dot matrix LED electronic display screens and the American company ATMEL's 80C51 MCU to control the display, enabling the dynamic display of Chinese characters. The implementation of row and column drivers facilitates the display of the characters, while the use of 16 8x8 dot matrix LED display modules allows for a clear and visually appealing presentation. The thesis serves as a comprehensive guide for the development of similar LED dot matrix display projects, providing insights into both hardware and software aspects of the design.