4、_VECTOR(3DOWNTO0);11 BEGIN 12 CNT:PROCESS(CLR,CLK)13 BEGIN 14 IFCLR='1'THEN15 TMP<=0;16 ELSEIFCLK'EVENTANDCLK='1'THEN17 TMP<=TMP+1;18
5、 ENDIF; 19 ENDPROCESS;20 OUTLED:PROCESS(TMP)21 BEGIN 22 CASE TMP IS23 WHEN"0000"=> LED7S<="0111111";24 WHEN"0001"=> LED7S<=&