The period of Stone Age is during 2000--250BC.()
The period of Stone Age is during 2000--250BC.()
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8、基于initial语句产生普通时钟信号, parameter clk_period = 10; reg clk; initial begin clk = 0; ________________; endA.always #(clk_period/2) clk = ~clkB.forever #(clk_period/2) clk = ~clkC.always #(clk_period) clk = ~clkD.forever #(clk_period) clk = ~clk
基于initial语句产生普通时钟信号, parameter clk_period = 10; reg clk; initial begin clk = 0; ________________; endA.always #(clk_period/2) clk = ~clkB.forever #(clk_period/2) clk = ~clkC.always #(clk_period) clk = ~clkD.forever #(clk_period) clk = ~clk
在端口PHI1创建时钟周期为10,上升在5.0,下降在9.5A.create_clock “PHI1” –period 10 –waveform {5.0 9.5}B.create_clock “PHI1” period 10 –waveform {5.0 9.5}C.create_clock “PHI1” period 10 waveform {5.0 9.5}D.create_clock “PHI1” –period 10 –waveform {1 2}
在xml中表示age>20,那么格式可以是A.<age>age>20</age>B.<age>agelt;>20</age>C.<age>age>>20</age>D.<age><!CDATA[age>20]></age>
以下关于VDB函数的语法正确的是()。A.VDB(cost,salvage,life,period,factor)B.VDB(cost,salvage,life,period,month)C.VDB(cost,salvage,life,per)D.VDB(cost,salvage,life,start-period,end-period,factor,no-switch)