本项目主要是利用FPGA技术实现电子日立的功能，显示年月日星期，显示格式为：“年. 月. 日. 星期”，其中年月日星期均为可调电路。该项目共有七个模块：星期控制电路、日期控制电路、月份控制电路、年份控制电路、选择月份电路、扫描显示电路和调节电路。总体思路是：星期和日期控制电路共用一个脉冲信号；日期的进位反馈给调节电路，再通过调节电路中的开关控制选择月份和月份控制电路的脉冲信号，以起到随时调节月份的作用；同理，月份控制电路的进位反馈给调节电路以随时调节年份。-The project is mainly the use of FPGA technology to achieve the functions of e-Hitachi, showing date week display format: "year. On. Day. Weeks", which are adjustable date-week circuit. A total of seven modules of the project: week control circuit, the date of the control circuit, control circuit of the month, year, control circuit, select the month of the circuit, scan display circuit and regulating circuit. The general idea is: the date a week and share a pulse control circuit signal　date back to the binary-conditioning circuit, and then by adjusting the switch control circuit to choose the month and the month of the pulse signal control circuit, at any time to play a role in regulation of the month　with the rationale for, the month of binary control circuit to adjust the feedback circuit to adjust the year at any time.