
两齿轮啮合运动,Z1=30、Z2=10,若ω1=57rad/s,则ω2为()rad/s。
A.171
B.10
C.38
D.5


A.171
B.10
C.38
D.5
下面程序是1个流水灯电路的verilog-HDL代码,试补充完整。
module liushuideng(clk,rst,dout);
input clk,rst;
output dout;
reg [7:0] dout;
reg 1.() c_state,n_state;
parameter s0=3'b000,s1=2.() ,s2=3'b010,s3=3'b011,
s4=3.() ,s5=3'b101,s6=4.(),s7=3'b111;
always@(posedge clk or posedge rst)
begin
if(rst) c_state<=s0;
else c_state<=n_state;
end
always@(c_state )
begin
case(5.() )
s0:begin n_state<=s1;dout<=8'b00000001; end
s1:begin n_state<=s2;dout <=8'b00000010; end
s2:begin n_state<=s3;dout <=8'b00000100; end
s3:begin n_state<=s4;dout <=8'b00001000; end
s4:begin n_state<=s5;dout <=6.() ; end
s5:begin n_state<=s6;dout <=8'b00100000; end
s6:begin n_state<=7.();dout <=8'b01000000; end
s7:begin n_state<=s0;dout <=8'b10000000; end
default:begin n_state<=8.();dout<=8'b00000001; end
endcase
end
endmodule