6.??LPC1768微控制器的串口模块的中断标志寄存器是:( ) A. UnIIR B. UnTHR C. UnRBR D. UnIER ...
1.??ARM中的一个字包括 多少个字节:( ) A. 1字节 B. 2字节 C. 3字节 D. 4字节 ...
16.??LPC1768控制串口0的FIFO控制器U0FCR = 0x81,则此时串口0的FIFO触发点为:( ) A. 1字节 B. 4字节 C. 8字节 D. 14字节 ...
11.??以下哪一项不是LPC1768微控制器的引脚P0.0的功能:( ) A. P0.0--通用数字输入/输出功能 B. RD1--CAN1接收器输入 C. TXD3--UART3发送器输出 D. TD1--CAN1发送器输出 ...
6.??LPC1768微控制器的串口0的U0DLM=0X03,U0DLL=0xE8,外设时钟PCLK=16MHZ,则此时串口0 的波特率为:( ) A. 9600 B. 4800 C. 2400 D. 1000 ...
1.??串口的波特率为9600,一帧数据格式为1位起始位,1位停止位,8位数据位,则每秒可以发送或者接收多少帧数据:( ) A. 960 B. 1200 C. 600 D. 480 ...
25.??"The days are getting longer." "Spring_______." A. must come B. must be come C. is having to come D. must be coming ...
10.??The teacher says that Xiao Yu ______ work harder. A. will have to B. has rather C. would rather to D. has better ...
21.??My room is a mess. It needs _____. A. to be tidying up B. tidying up C. to tidy up D. tidied up ...
12.??"Paul may have gone to the playground to watch a football match." "No, if there'd been a match today, he_____ ." A. could've told me B. might've told me C. would've told me D. must've told me ...