Any electronic computers include memory drives. Without them, the operator would not be able to save the result of his work or copy it to another medium.
Punch cards
At the dawn of the advent of computer technology , punch cards were used to store information - ordinary cardboard cards with digital markings.
On one punch card 80 columns were located, in each column it was possible to save 1 bit of information. The holes in these columns corresponded to one. Data reading occurred sequentially. It was impossible to record anything on a punch card again, so a huge number of them were required. To store a 1 GB data array would require 22 tons of paper.
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