基于单片机的4个16×16点阵汉字显示屏设计

The design of display Chinese characters based on MCU is a graduation thesis that focuses on the development and design of a 4x16x16 dot matrix LED electronic display screen. The core component of this design is the 40-pin single-chip microcontroller 80C51 produced by the American company ATMEL. This thesis introduces the dynamic design and development process of the LED dot matrix electronic display screen controlled by this microcontroller. LED dot matrix display screens are emerging display devices that are composed of multiple independent LED light-emitting diodes. They can display numbers or symbols and are commonly used to display time, speed, system status, and other information. The goal of this design is to create a display screen that can show 4 Chinese characters, and it adopts a 16x16 dot matrix display mode using 16 8x8 dot matrix LED display modules. The display screen is driven by a row driver 74LS138 and eight column drivers 4049, which are controlled by the 80C51 microcontroller. The design utilizes dynamic display techniques to achieve static display of texts on the LED dot matrix display screen. The thesis provides detailed explanations of the hardware design ideas, the functions and principles of each part of the hardware circuitry used in the LED dot matrix display, the program design of the corresponding software, and the instructions for usage. Keywords: 80C51 microcontroller, LED, dot matrix display, dynamic display. Overall, this graduation thesis presents a detailed design and development process of a LED dot matrix display screen for displaying Chinese characters. It demonstrates the application of the 80C51 microcontroller as a control system and provides insights into the hardware and software aspects of the design. The design makes use of dynamic display techniques to achieve static display of texts, allowing for the clear presentation of information.