In 1827, Harrison Grey Dyer used a form of the telegraph on long Island, New York, but he gave up the idea.
In 1827, Harrison Grey Dyer used a form of the telegraph on long Island, New York, but he gave up the idea.
1827年，哈里森·格雷·戴尔曾在纽约长岛使用了一种电报形式，但是他放弃了这个想法。