最初，它制造穿孔卡显示器，之后开发磁带系统，大型计算机及个人计算机，如今，又转向服务和咨询业务。
At first this meant making punch-card tabulators, but IBM moved on to magnetic-tape systems, mainframes, PCs, and most recently services and consulting.
这些穿孔卡本身被运用到计算机，而且非常普及，直到二十世纪七十年代它们老旧而不再有用才逐渐消失。
Punched CARDS themselves were carried over to computers, and were ubiquitous until their obsolescence in the 1970s.
要把穿孔卡写入计算机，就需用卡片输入机来取代纸带输入机。
To read the punched cards into the computer requires a card reader instead of the tape reader.
要把穿孔卡写入计算机，就需用卡片输入机来取代纸带输入机。
To read the punched cards into the computer requires a card reader instead of the tape reader.
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