As the revolution in computing advances, it is appropriate to step back and look at the earliest practical aid to computation?? abacus. Its formal western origins lie with the Greeks and the expansion of trade in the seventh century BC, and its...
Tallies;Reckoning boards;Accounting machines -- History
Two accounting aids of great importance for society in Sweden and Finland during the17th, 18th and 19th centuries were the reckoning board and the tally stick.