nxt_stat.m

实现（2

function[next_state,memory_contents]=nxt_stat(current_state,input,L,k)          % current_state=j  input=l  L=3  k=1
binary_state=deci2bin(current_state,k*(L-1));                                   % 用二进制数表示寄存器的状态
binary_input=deci2bin(input,k);                                                 % input=0  binary_input=0 ; input=1  binary_input=1
next_state_binary=[binary_input,binary_state(1:(L-2)*k)];                       % 移位寄存器从旧状态变为新状态，即从binary_state中去掉一个旧状态，加上一个input
next_state=bin2deci(next_state_binary);                                         % 用十进制表示下一个状态
memory_contents=[binary_input,binary_state];