How video calling started視頻通話是如何開始的

游余

Video calling is a technology1 when you call somebody. You see him at thesame time. It is a normal2 thing for us today. But people do not know it onehundred years ago.

People first get the idea of video calling in the late 1890s. They do not knowhow to do it. The first success3 is in the 1930s. But the video is very bad. A UScompany makes a Television-Phone in 1955. People see each other when they call.The screen4 is 25 cm wide. The Internet changes video calling in the late 1990s. Itis fast and the picture is good.

Many people use video calling every day. They work from home or they must stayat home. They are happy that they can see their family and friends on the screen.

視頻通話是一種和人通話的技術(shù)。你在跟他通話時能同時看到他。這對我們今天來說是一件很尋常的事。但一百年前人們還不知道它。

人們在19 世紀(jì)90 年代末首次有了視頻通話的想法。他們不知道怎么把它做出來。第一次成功是在20 世紀(jì)30 年代，但視頻效果很糟糕。1955 年，一家美國公司生產(chǎn)出一種電視電話。人們打電話時看得到對方。電視電話的屏幕寬25 厘米。20 世紀(jì)90 年代末，互聯(lián)網(wǎng)改變了視頻通話，連接速度很快，畫面也很清晰。

許多人每天都使用視頻通話。他們在家工作，或者必須待在家里。他們很高興能在屏幕上看到自己的家人和朋友。

Notes

1. technology 科技；技術(shù)

2. normal 正常的；標(biāo)準(zhǔn)的

3. success 成功；勝利

4. screen? 屏幕