更多“The young are always anxious at man’s estate. (英译汉) ”相关问题
  • 第1题:

    关于以下程序,下列说法中正确的是 module Mux21 (a,b,s,y); input a,b; input s; output y; reg y; always @(a or b or s) if (!s) y = a; else y = b; endmodule

    A.每当a或b或s生变化时,将执行always模块内语句

    B.a,b可以被定义为wire型

    C.该程序输出的表达式为y=(~s)a+sb

    D.y可以被定义为wire型


    begin end 块内的语句是顺序执行的;该程序的功能是四选一选择器;当输入为 sel = 11 时,输出为 in3

  • 第2题:

    下面的代码的执行结果是____ s = 'F' if s == 'f': print('lady') else: print('man')


    3

  • 第3题:

    2、下列不是合法标识符的是()

    A._abc

    B.a_s1

    C.d$shut

    D.always


    9moon

  • 第4题:

    3、下列哪一个表述是正确:

    A.always@(posedge CLK or RST)

    B.always@(posedge CLK or negedge RST or A)

    C.always@(posedge CLK or D or Q)

    D.always@(posedge CLK or negedge RST)


    deductive,guided discovery

  • 第5题:

    下列Moore型状态机采用Verilog语言主控时序部分正确的是:

    A.always@(posedge clk or negedge reset) begin if(!reset) current_state<=s0; else current_state<=next_state; end

    B.always@(posedge clk ) begin if(!reset) current_state<=s0; else current_state<=next_state; end

    C.always@(posedge clk t) if(reset) current_state<=s0; else current_state<=next_state;

    D.always@(posedge clk or negedge reset) if(reset) current_state<=s0; else current_state<=next_state;


    always@(posedge clk or negedge reset) begin if(!reset) current_state<=s0; else current_state<=next_state; end

  • 第6题:

    以下的描述中,必然是对Mealy型状态机的描述的是?

    A.always @(*) case (state) S0: begin out = 0; if (in) next_state = S1; else next_state = S2; end ……#B.always @(*) case (state) S0: begin if (in) next_state = S1; else next_state = S0; end ……#C.always @(*) case (state) S0: begin if (in) begin next_state = S1; out=1 end else next_state = S0; end ……#D.以上答案均不正确
    always @(*) case (state) S0: begin if (in) begin next_state = S1; out=1 end else next_state = S0; end ……