world clock

FPGA经验总结：时序是设计出来的 我们在做详细设计的时候，对于一些信号的时序肯定会做一些调整的，但是这种时序的调整最多只能波及到本一级模块，而不能影响到整个设计。(FPGA Experience: Timing is designed to do the detailed design of our time, for some signal timing will certainly make some adjustments, but adjust this timing can only spread to up to this level of the module, but not affect the whole design.)

说明：  基于IIC协议的EEPROM模型，可实现串行数据转并行数据，并行数据转串行数据，分为EEPROM模块，EEPROM_WR模块，signal模块，Top模块(The EEPROM model based on IIC protocol can convert serial data to parallel data and parallel data to serial data. It is divided into EEPROM module and EEPROM module_ WR module, signal module, top module)

_EDA实验讲义EDA实验指导书EDA技术与VHDL第3章EDA技术实用教程EAD技术与实践.等等资料-Experimental _EDA experimental guidance notes EDA books EDA technology and VHDL in Chapter 3 of EDA technologies utility EAD Technology and Practice Guide. And so on Information

文件用于驱动TFT屏，分辨率800*400，平台为quartus13，芯片为cycloneIV(The file is used to drive the TFT screen with a resolution of 800*400. The platform is quartus 13 and the chip is cyclone IV.)

说明：  displayport 参考设计，可以对比自己工程做验证，另有参考设计XAPP1178未找到，采用方案为DP159 + Artix7 FPGA(xilinx displayport sink design)

温度传感器实验，将温控芯片的温度信号通过fpga用数码管显示(temperature display)

8位加减器，八位减法器与加法器，用过一个控制端可以自由变换，采用移位加法方式，用途广泛，利用减法位补码加法的理论实现。(8 addition and subtraction, eight subtractor and adder, used a control terminal can freely change the using Shift addition, a wide range of uses, the use of subtraction complement addition theory to achieve.)

说明：  USB主机和设备的verilog代码，实现了USB1.1协议规范的要求(USB host and equipment Verilog code to achieve the USB 1.1 protocol specification requirements)

异步FIFO 输入: 16bit 输出:16bit 深度:256(Asynchronous FIFO Input: 16bit Output: 16bit Depth: 256)

微波炉定时器集成电路的设计 1、 控制状态机：工作状态状态转换。 2、 数据装入电路：根据控制信号选择定时时间、测试数据或完成信号的装入。 3、 定时器电路：负责完成烹调过程中的时间递减计数和数据译码供给七段数码显示，同时还可以提供烹调完成时间的状态信号供控制状态机产生完成信号。 -microwave timer IC design a control state machine : state of the state conversion work. 2, data loading circuit : According to choose control signal timing, or the completion of the test data signal load. 3, timer circuit : responsible for the completion of the cooking process of counting and time decreasing supply data decoding digital paragraph 107, while cooking can also provide time to complete state control signal for the state machine generated signals.