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/*Purpose:灏嗗洓浣嶄簩杩涘埗杞垚8421BCD鐮侊紝骞舵樉绀哄埌鏁扮爜绠?/
module bcd(clk_50m,a,c,en);
input clk_50m;
input[3:0] a;
output[7:0] c;
output[1:0] en;
/*鍐呴儴鍙橀噺*/
reg[7:0]  c;
reg[1:0]  en=2'b10;
reg[1:0]  en_temp;
reg       clk_div=0;//鍒嗛鍚庢椂閽?br /> reg[7:0]  code_data;//0000_0000,鍙互琛ㄧず2浣嶅崄杩涘埗鐨凚CD瀵勫瓨鍣?br /> reg[3:0]  num_temp;//鏁扮爜绠℃鐮?br /> reg[19:0] counter;//鍒嗛璁℃暟

/*Translate*/
always@(a)
begin
  if(a<=9)