VHDL语言实现的移位器，功能包括算术左移和右移，逻辑左移和右移，循环左移和右移。-VHDL language implementation of the shifter, left and right shift functions include arithmetic, logical left and shifted to the right, left and right shift cycle.

8位移位器，实现算术左、右移位，逻辑左右移位和循环左右移位。-8-bit shift device to achieve arithmetic left and right shift, logical shift left shift and cycle around.