文档介绍：单片机****题-判断题
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate 。（    ）
12、指令字节数越多，执行时间越长。（    ）
13、子程序调用时自动保护断点和现场。（    ）
14、内部寄存器Rn（n=0~7）作为间接寻址寄存器。（    ）
15、中断响应最快响应时间为三个机器周期。（ 对  ）
16、MCS－51单片机片外数据存储器与扩展I/O口统一编址。（    ）
17、指令字节数越多，执行时间越长。（    ）
18、子程序调用时自动保护断点和现场。（    ）
19、内部寄存器Rn（n=0~7）作为间接寻址寄存器。（    ）
20、中断响应的最快响应时间为3个机器周期。（    ）
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box cen