In the 1840's, Hughes Printing Telegraph arranged the keys like a piano keyboard.

在 1840 年代， Hughes Printing Telegraph 将按键排列得像钢琴键盘。

In 1844, Morse filed for a patent (granted 1849) of the printing telegraph.

1844 年，莫尔斯申请了印刷电报的专利（1849 年获得批准）。

This Corporation had recently introduced its " printing telegraph, " a device that made it possible to communicate without the intermediary operator.

这家公司最近推出了“印刷电报” ，一种无需中介操作员即可进行通信的设备。