They were gradually phased out when (very expensive!) digital hand-held calculators came on to the market in the early 1970s.
* Expensive as in a simple 4-function digital calculator was priced at more than half the average person's weekly salary. 10-15 years later, similar-capability solar-powered calculators were being given away as promotional materials.
Yes. Qin Shi Huang commanding the human computer made by very large population is, I think, a satire on the obsession of dictatorship country with large-scale population performances (which always happens in China and North Korea), but that's really a very imaginative and mind-blowing scene.
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[ 2.9 ms ] story [ 32.0 ms ] threadThey were gradually phased out when (very expensive!) digital hand-held calculators came on to the market in the early 1970s.
* Expensive as in a simple 4-function digital calculator was priced at more than half the average person's weekly salary. 10-15 years later, similar-capability solar-powered calculators were being given away as promotional materials.