• 2022-06-01 问题

    ​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)

    ​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)

  • 2022-06-01 问题

    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)

    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)

  • 2022-06-16 问题

    下列敏感信号的表示属于边沿敏感型的是________ A: always@(posedge clk or posedge clr) B: always@(A or B) C: always@(posedge clk or clr) D: always @ (*)

    下列敏感信号的表示属于边沿敏感型的是________ A: always@(posedge clk or posedge clr) B: always@(A or B) C: always@(posedge clk or clr) D: always @ (*)

  • 2022-10-26 问题

    要实现异步复位(低电平有效)、时钟使能(高电平有效)、上升沿触发的D触发器设计:module dff_s (data,rst,en,clk,q);input data,rst,en,clk;output reg q;always (1) begin if( 2 ) q<=1'b0;; else if (3) q<=data;endendmodule(1)应该填写( )。 A: @(posedge clk ) B: @(posedge clk or posedge rst or en) C: @(posedge clk or negedge rst) D: @(posedge clk or negedge rst or en)

    要实现异步复位(低电平有效)、时钟使能(高电平有效)、上升沿触发的D触发器设计:module dff_s (data,rst,en,clk,q);input data,rst,en,clk;output reg q;always (1) begin if( 2 ) q<=1'b0;; else if (3) q<=data;endendmodule(1)应该填写( )。 A: @(posedge clk ) B: @(posedge clk or posedge rst or en) C: @(posedge clk or negedge rst) D: @(posedge clk or negedge rst or en)

  • 2022-05-25 问题

    ADC 0809采样结束后需要通过LOCK向锁存器LATCH发出锁存信号,以便将输出口的D&#91;7:0&#93;8位数据锁存起来,下列程序当中能够实现数据锁存功能的是() A: always@(posedge LOCK) if (LOCK) REGL<=D; B: always@(posedge LOCK) if (!LOCK) REGL<=D; C: always@(posedge RST) if (!LOCK) REGL<=D; D: always@(posedge RST or posedge LOCK ) if (!LOCK) REGL<=D;

    ADC 0809采样结束后需要通过LOCK向锁存器LATCH发出锁存信号,以便将输出口的D&#91;7:0&#93;8位数据锁存起来,下列程序当中能够实现数据锁存功能的是() A: always@(posedge LOCK) if (LOCK) REGL<=D; B: always@(posedge LOCK) if (!LOCK) REGL<=D; C: always@(posedge RST) if (!LOCK) REGL<=D; D: always@(posedge RST or posedge LOCK ) if (!LOCK) REGL<=D;

  • 2022-11-02 问题

    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&lt;=s0; else current_state&lt;=next_state; end B: always@(posedge clk ) begin if(!reset) current_state&lt;=s0; else current_state&lt;=next_state; end C: always@(posedge clk t) if(reset) current_state&lt;=s0; else current_state&lt;=next_state; D: always@(posedge clk or negedge reset) if(reset) current_state&lt;=s0; else current_state&lt;=next_state;

    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&lt;=s0; else current_state&lt;=next_state; end B: always@(posedge clk ) begin if(!reset) current_state&lt;=s0; else current_state&lt;=next_state; end C: always@(posedge clk t) if(reset) current_state&lt;=s0; else current_state&lt;=next_state; D: always@(posedge clk or negedge reset) if(reset) current_state&lt;=s0; else current_state&lt;=next_state;

  • 2022-11-02 问题

    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;

    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;

  • 2022-06-09 问题

    下边程序实现上升沿触发的D触发器的功能,请在括号处将程序补充完整。( )module DFFl (ClK, D,Q) ; output Q ; input ClK , D ; ( ); always @ (posedge ClK) Q <;= D ;endmodule A: reg Q B: posedge D C: posedge Q D: reg D

    下边程序实现上升沿触发的D触发器的功能,请在括号处将程序补充完整。( )module DFFl (ClK, D,Q) ; output Q ; input ClK , D ; ( ); always @ (posedge ClK) Q <;= D ;endmodule A: reg Q B: posedge D C: posedge Q D: reg D

  • 2022-05-31 问题

    下列Verilog HDL代码描述中,采用时钟信号clock上升沿和复位信号reset下降沿触发的是( )。 A: always @ ( posedge clock, negedge reset ) if ( reset ) B: always @ ( posedge clock, negedge reset ) if ( ! reset ) C: always @ ( clock, reset ) if ( reset ) D: always @ ( posedge clock or negedge reset ) if ( reset==0 )

    下列Verilog HDL代码描述中,采用时钟信号clock上升沿和复位信号reset下降沿触发的是( )。 A: always @ ( posedge clock, negedge reset ) if ( reset ) B: always @ ( posedge clock, negedge reset ) if ( ! reset ) C: always @ ( clock, reset ) if ( reset ) D: always @ ( posedge clock or negedge reset ) if ( reset==0 )

  • 2022-06-09 问题

    ​下面程序实现了上升沿触发的 D 触发器的功能,请在括号处将程序补充完整。( )‎​module DFFl (ClK, D,Q) ;‎​ output Q ;‎​ input ClK , D ;‎​ ( );‎​ always @ (posedge ClK)‎​ Q <;= D ;‎​endmodule‎​‎ A: reg Q B: posedge D C: posedge Q D: reg D

    ​下面程序实现了上升沿触发的 D 触发器的功能,请在括号处将程序补充完整。( )‎​module DFFl (ClK, D,Q) ;‎​ output Q ;‎​ input ClK , D ;‎​ ( );‎​ always @ (posedge ClK)‎​ Q <;= D ;‎​endmodule‎​‎ A: reg Q B: posedge D C: posedge Q D: reg D

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