【摘要】 在对8279的键盘显示接口分析的基础上,设计实现最多32位数码管显示驱动电路.利用8279可实现对键盘/显示的自动扫描,以减轻CPU负担。其显示稳定,程序简单,不会出现误动作。本系统采用W78E516单片机与8279芯片的显示接口组成对LED数码管应用系统的显示驱动电路。具有可靠性高、价格低、使用方便等特点,适合燃油加油机的前后显示屏使用。更多还原

【Abstract】 On the basis of the analysis of the 8279 keyboard display interface, designs and implementates up to 32 digital tube display driver circuit. Automatic scanning of the keyboard/display can be realized by using 8279, to reduce the burden of CPU. Its display stability, the procedure is simple, does not appear the wrong action. This system uses the W78E516 MCU and the 8279 chip display interface to form the LED digital tube display driver circuit. With high reliability, low price, easy to use and so on, it is suitable for fuel tanker before and after the use of the display screen.更多还原