【判断题】EA引脚是片内/片外程序存储器选择控制端,当EA引脚为高电平时,单片机复位后首先访问片内程序存储器。
【判断题】EA 引脚是片内 / 片外程序存储器选择控制端,当 EA 引脚为高电平时,单片机复位后首先访问片内程序存储器。
【单选题】I think I'll take a week ______ . I need a holiday.
【单选题】—Do you think it will rain tomorrow? — . Because farmers need rain very much. [ ]
【简答题】旅行社根据旅游者的具体要求安排旅程,与旅游者订立包价旅游合同的,旅游者请求变更旅程安排,费用的增减是如何规定的?
【单选题】Dave:I think I need much money,but my wife does not think so.______?Caroline: What do you need' much money' for? Perhaps your wife is a very organic, simple needs person. Have you ever explained what ...
B.
Why does she not agree
C.
How could she not like money
D.
When she will agree with me
【单选题】零状态响应在过渡过程中的衰减快慢有( )决定
【多选题】选择题5:在教学过程中,常将单片机的引脚进行分类,其中控制类引脚是指哪些引脚:
B.
第29脚(PSEN),片外程序存储器ROM读选通信号。
C.
第30脚(ALE/PROG),地址锁存允许信号输出端,扩展时使用。
D.
第31脚(EA/Vpp),内部与外部程序存储器选择输入端。
【判断题】痤疮是一种容易复发的疾病,且本身疾病轻重波动不稳。