A、with
B、to
C、in
D、at
第1题:
There are nations whose lack of contact with the outside with the outside world has()poverty.
Afallen into
Bconsisted in
Cresulted in
Dcome up to
第2题:
阻塞赋值只能在always块内使用,非阻塞赋值可以在always块外使用。
第3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)
第4题:
2、选出正确的触发器描述
A.module D_FF (input D,Clock, output reg Q); always@(Clock,D) Q <= D; endmodule
B.module D_FF (input D,Clock, output reg Q); always@(posedge Clock) Q <= D; endmodule
C.module D_FF (input D,Clock, output reg Q); always@(negedge Clock) Q <= D; endmodule
D.module D_FF (input D,Clock, output reg Q); always_ff@(posedge Clock) Q <= D; endmodule
E.module D_FF (input D,Clock, output reg Q); always_ff Q <
第5题:
10、在过程赋值语句always语句块里赋值,称为过程赋值,always@ 后面的括号里是敏感列表,如下用持续赋值语句描述了一个异或门电路,与它等价的过程赋值语句是() input wire a,b; output wire c; assign c = a^b;
A.input wire a,b; output reg c; always@(a,b) assign c = a^b;
B.input wire a,b; output wire c; always@(a and b) assign c = a^b;
C.input wire a,b; output reg c; always@ * assign c = a^b;
D.input wire a,b; output logic c; always_comb assign c = a^b;
第6题:
下列描述中采用时钟clk正边沿触发且rst异步低电平复位的代码描述是
A.always @ (posedge clk, negedge rst) if (rst)
B.always @ (posedge clk, rst) if (!rst)
C.always @ (posedge clk, negedge rst) if (!rst)
D.always @ (negedge clk, posedge rst) if (rst)