在主机终端记录一个宏时，它提供了可选的，自动化的屏幕截图功能。

It provides optional, automatic capture of screens as a macro is being recorded in the Host Terminal.

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电子邮件出现在更早的几年前，它是在一台主机的不同终端之间实现的；第一封真实的电子邮件直到1971年才在不同的电脑之间发送成功。

And email had existed for a few years before that, between different terminals on single mainframes; the first true email sent between different computers was not sent until 1971.

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在1980年代早期，个人电脑(PC)变得非常流行，它比大型主机便宜，处理能力又比简易终端之类的设备强。

In the early 1980s, personal computers (PCs) became very popular. They were less expensive and had more processing power than the dumb terminal counterparts.

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