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Before the internet and smartphones, computing was a world of punch cards and mainframes.

Professor Brailsford reflects on the era of mainframes and the subsequent Unix revolution. This video explores the stark contrast between modern integrated circuits and the isolated, hardware-heavy computing environments of the past.

In the age of mainframes, computing lacked the connectivity of the modern internet or networking. Users interacted with systems through simple screens and keyboards or by physically punching holes into cards to input data.

The video examines the transition from these isolated, massive systems to the Unix revolution, highlighting how computing has fundamentally shifted from the specialized, hardware-centric world of ICL machines to the integrated digital landscape we inhabit today.

Source: Mainframes and the Unix Revolution - Computerphile

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