They were too large and expensive - typically a computer would fill a room and would have to have its own power supply.
The three-fifths compromise was when the Northern and Southern states decided to make an enslaved person count as 3/5 of a person for taxation and representation. This shows back then that Americans viewed slaves as property and didn't want them to count as a real person.
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Explanation:
The baptism of Kiev was followed by similar ceremonies in other urban centres of the country. The Ioakim Chronicle says that Vladimir's uncle, Dobrynya, forced the Novgorodians into Christianity "by fire", while the local mayor, Putyata, persuaded his compatriots to accept Christian faith "by the sword".