The calculator is the earliest computing tool. For example, Quipu or khipu is a method of knotting notes by the ancient Incas to count or record hist…
Early calculators were purely manual, such as abacus, calculations, etc. The abacus is usually made of sliding beads.
A printer is one of the computer's output devices that prints computer processing results on the relevant media.
The printer was invented by John Water and Dave Donald. A device on which a computer's calculation results or intermediate results are printed on pap…
Printer press Data transmission methods can be divided into two types: serial printers and parallel printers.
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