Chapter 1 - First computer in the world
A computer is a machine that can be programmed to carry out sequences of arithmetic or
logical operations (computation) automatically. Modern digital electronic computers can
perform generic sets of operations known as programs. These programs enable computers
to perform a wide range of tasks. A computer system is a nominally complete computer that
includes the hardware, operating system (main software), and peripheral equipment needed
and used for full operation. This term may also refer to a group of computers that are linked
and function together, such as a computer network or computer cluster.