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:beginout=0;if(in)next_state=S1;elsenext_state=S2;end……
B: always@(*)case(state)S0:beginif(in)next_state=S1;elsenext_state=S0;end……
C: always@(*)case(state)S0:beginif(in)beginnext_state=S1;out=1endelsenext_state=S0;end……
D: 以上答案均不正确
A: always@(*)case(state)S0:beginout=0;if(in)next_state=S1;elsenext_state=S2;end……
B: always@(*)case(state)S0:beginif(in)next_state=S1;elsenext_state=S0;end……
C: always@(*)case(state)S0:beginif(in)beginnext_state=S1;out=1endelsenext_state=S0;end……
D: 以上答案均不正确
举一反三
- 定义状态机当前状态为state ,次态为next _state; 输入a,输出b, 则下列为Mealy状态机的写法是： A: always@（posedge clk）case (state )0:next_state<=1;1:next_state<=x; B: always@（posedge clk）case (state )0: if（a==0）next_state<=1; else next_state<=x;1:next_state<=x; C: always@（posedge clk）case (state )0: if（state==0）next_state<=1; else next_state<=x;1:next_state<=x; D: 以上都是正确的
- 下列Moore型状态机采用Verilog语言说明部分正确的是： A: parameter [2:0] s0=0, s1=1,s2=2,s3=3,s4=4;reg [2:0] current_state, next_state; B: parameter [1:0] s0=0, s1=1,s2=2,s3=3,s4=4;reg [1:0] current_state, next_state; C: TYPE FSM_ST IS (s0, s1,s2,s3,s4); SIGNAL current_state, next_state: FSM_ST; D: typedef enum {s0, s1,s2,s3,s4} type_user;type_user current_state, next_state
- 下述程序中能够实现安全状态机设计的是： A: Parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7;...s5: next_state =s0;S6: next_state =s0;S7: next_state =s0;default:begin next_state =s0; B: `define s0=1,s1=2,s2=4,s3=4,s4=8s5: next_state =s1;S6: next_state =s1;S7: next_state =s2;default:begin next_state =s0; C: Parameter s0=40,s1=41,s2=42,s3=43,s4=44,s5=45,s6=46,s7=47;...s5: next_state =s0;S6: next_state =s0;S7: next_state =s0; D: 以上都正确
- 下述程序中能够实现安全状态机设计的是 A: Parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7;...s5: next_state =s0;S6: next_state =s0;S7: next_state =s0;default:begin next_state =s0; B: define s0=1,s1=2,s2=4,s3=4,s4=8s5: next_state =s1;S6: next_state =s1;S7: next_state =s2;default:begin next_state =s0; C: Parameter s0=40,s1=41,s2=42,s3=43,s4=44,s5=45,s6=46,s7=47;...s5: next_state =s0;S6: next_state =s0;S7: next_state =s0; D: 以上都是正确选型
- In America’s house of representatives, each state has at least representatives. A: 0 B: 1 C: 2 D: 3