Periodic ZQ - Also known as ZQ Calibration Short (ZQCS). It is used to run ZQ calibration periodically to tune the 240Ω resistor that was described earlier.
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，更多细节参见viber
Once in editing mode, setcell decides what you typed: if it starts with +, -, (, or @, it’s a formula. If it parses as a number, it’s a number. Everything else is a label.。手游对此有专业解读
“我想要的是一种高度个性化的助手。”彼得在个人博客里解释：“比如，我见完一个朋友回到家，它会问我：刚才那次见面怎么样？如果我已经三周没给朋友Thomas发消息了。他看了朋友的Instagram，发现他在这个城市，会主动提醒我，要不要去打招呼。”