摘要
论述了一种小型嵌入式LED点阵显示系统的驱动电路和汉字编码方法;驱动电路采用行驱动芯片74LS273和9013,列驱动芯片74LS374,结合寻址电路,对每个LED点动态驱动;显示程序采用行扫描,列顺序输出码值的方法,结合四段式汉字编码方法,无间断和延迟的在LED阵上输出汉字。整个系统试验后运行稳定美观,功耗低,且有很大的扩展空间。
The driving circuit and a method of Chinese character coding in an embedded LED array display system are discussed in this paper. 74LS273 and 9013 work as row driving chip, and 74LS374 works as line driving chip; they work with the address - seeking circuit, dynamically drive each LED dot; in display program, the approach of row - scanning, output code in line order, with 4 - segment coding, display Chinese character in a LED array without pause and delay. The system runs steadily and aesthetically with low cost. It has room for extending functions.
出处
《微处理机》
2007年第1期119-121,共3页
Microprocessors
关键词
嵌入式系统
LED点阵
汉字显示系统
8098单片机
Embedded system
LED array
Chinese Character Displaying System
8098 single - chip controller
