What are the main functions of a computer?

Computers
use inputs and outputs to do various tasks. Computers receive programs in various codes and use
them to do complex tasks. The first computers were the size of a room and relied on a system of
punch cards in order to receive data. As electronics have improved, computers have become
smaller. Computers can now take a given input and return a set product quite quickly and in a
lot less space.

Computers are also used to store data. This data is cataloged
into the electronic hard drive of the computer or the computer can send it to "the
cloud" where there is more data storage ability. This data can be used to track customer
data, medical records, and a host of other things. Computers can also read data from external
devices such as floppy disks, CD's, and Flash drives provided that they have the right programs
downloaded to do so.

Computers can also communicate with each other if
linked. This is probably one of the best-known functions of computers today as the Internet is a
system of linked computers who communicate with each other.