Error (10482): VHDL error at MUX4_1.vhd(18): object "STD_LOGIC" is used but not declared如题,这是一个利用计数器控制多路选择器来实现时分复用的程序,到底哪里出问题了啊?求大神指导
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 19:43:53
![Error (10482): VHDL error at MUX4_1.vhd(18): object](/uploads/image/z/13568202-18-2.jpg?t=Error+%2810482%29%3A+VHDL+error+at+MUX4_1.vhd%2818%29%3A+object+%22STD_LOGIC%22+is+used+but+not+declared%E5%A6%82%E9%A2%98%2C%E8%BF%99%E6%98%AF%E4%B8%80%E4%B8%AA%E5%88%A9%E7%94%A8%E8%AE%A1%E6%95%B0%E5%99%A8%E6%8E%A7%E5%88%B6%E5%A4%9A%E8%B7%AF%E9%80%89%E6%8B%A9%E5%99%A8%E6%9D%A5%E5%AE%9E%E7%8E%B0%E6%97%B6%E5%88%86%E5%A4%8D%E7%94%A8%E7%9A%84%E7%A8%8B%E5%BA%8F%2C%E5%88%B0%E5%BA%95%E5%93%AA%E9%87%8C%E5%87%BA%E9%97%AE%E9%A2%98%E4%BA%86%E5%95%8A%3F%E6%B1%82%E5%A4%A7%E7%A5%9E%E6%8C%87%E5%AF%BC)
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