清华大学电子课程设计：Verilog，QuartusII可正确运行，可下载到FPGA上，音乐计算器，完成两个三位数的运算，有注释，很强大-Verilog, QuartusII run correctly, can be downloaded to the FPGA, music, calculator, completed two three-digit operations, there are notes, very powerful! !

音乐计算器，当输出分别为正负数时，用蜂鸣器响起两段不同的音乐。计算器可实现0~999范围内的加减与或比较功能，并支持连续运算。-Music calculator

音乐计算器的设计与实现。完成加减与或比较计算，能显示进位借位零位，能根据结果的正负发出两首不同的音乐。(Design and implementation of music calculator. Complete addition and subtraction and comparison calculation, can display carry and borrow zero, can send out two different music according to the posi