Computing The computer , as a tool for the processing of information, has had a vast impact on 20th-century life. The third is of a different order from the first two, because it deals with the processing of information as well as with its storage.
Computers can have such a great effect because of their versatility.
They can also represent numbers, using the binary number system , with current flowing for 1 and not flowing for 0. A computer, though versatile, is not omnipotent. There are definite limits to the tasks that computers can perform. Other approaches include the philosophical idea of Church's thesis , which basically is that any function for which an algorithm to calculate it can be devised informally can be computed in practice. Once an algorithm for a task has been developed, it is necessary to program it into the computer so that the computer can perform it.