At first this meant making punch-card tabulators, but IBM moved on tomagnetic-tape systems, mainframes, PCs, and most recently services and consulting.
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。
2
Sony used racoon hair brushes to daub magnetic powder over the paper to produce what it cally "SONI TAPE", starting its history as an audio-video products maker.
Magnetictape is claimed to be the best, with a shelf life of up to 30 years in optimal conditions, but even it eventually succumbs to the ravages of time.