20世纪晚期，在发达国家中，电报的大部分应用已被用计算机技术的数字数据传输系统取代。
By the late 20th century the telegraph had been replaced in most applications in developed countries by digital data transmission systems Based on computer technology.
20世纪晚期，在发达国家中，电报的大部分应用已被用计算机技术的数字数据传输系统取代。
By the late 20th century the telegraph had been replaced in most applications in developed countries by digital data transmission systems Based on computer technology.
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