In reality a computer has its years numbered meaning that after it leaves the factory it wil b eonly good for a certain of years perhaps no more than five.
However ac omputer can be upgraded trough hardware and software to make it perform much better.
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computers weren't invented in 1856.
Because the first, second, and third generation computers were also digital computers.
the invention of microprocessor (single chip cpu) gave birth to micro computers. they are several times cheaper that mini computers. classification of micro computers: 1.workstations 2.personal computers 3.laptop computers 4.palm PC's
87.644,00 computers in Africa.
computers came in 1956