From the second you get up in the morning to the second you go to sleep computer are tied into what you do and use in some way. It is tied in to you life in the most obvious and obscure ways. Take for example you wake up in the morning usually to a digital alarm clock. You pick up the phone it uses computers. It is inevitable.
Many people think of computers as a new invention, and in reality it is very old.
The first computer was the abacus. This invention was constructed of wood, two wires, and beads. It was a wooden rack with the two wires strung across it horizontally and the beads were strung across the wires. This was used for normal arithmetic uses. These type of computers are considered analog computers.