Java写的一个能在二进制，八进制，十进制，十六进制格雷码之间自由转化的工具，学习数字电路的同学可能会喜欢。-write a Java in binary, octal, decimal, Gray hexadecimal code freely into the tools, learning digital circuit students might like.

EJML is a Java implemented matrix computation tools，including reading datafile into matrix representation，and common matrix operations.