【摘要】 介绍以 8 9C5 5单片机为核心 ,具有中文、图形液晶显示、键盘操作、串行通信等功能的用户终端硬件系统。对硬件电路的设计、功能、工作过程和工作方式进行了详细阐述更多还原

【Abstract】 This paper introduces the design of the user terminal hardware system with the 89C55 MPU. This system provides the functions: Chinese and graphics LCD display, key operation, serial communication, etc. This paper discusses the design, the functions and the work processes of the hardware electrocircuit in detail.更多还原