执行返回指令,退出中断服务程序,这时返回地址来自( )。A.ROM区 B.程序计数 发布时间:2017-05-31 01:56 │ 来源:www.tikuol.com 题型:单项选择题 问题: 执行返回指令,退出中断服务程序,这时返回地址来自( )。A.ROM区B.程序计数器C.堆栈区D.CPU的暂存寄存器
题型:单项选择题 Any computer, be it a large PC or a small embedded computer, is useless if it has no means to interact with the outside world. I/O communications for an embedded computer frequently happen over a bus called the ______.A.I/O busB.Memory BusC.Device busD.Internal Bus 查看答案