vhdl语句中 IF count(3 DOWNTO 0) = x"9" THEN
还有when "00" =>bcd_led
人气:409 ℃ 时间:2020-05-24 06:56:20
解答
X"9" 是表示16进制的9,二进制就是“1001”,X“”是十六进制表示法
when "00" =>bcd_led
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