A computer is a general purpose device that can be programmed to carry out a set of arithmetic or logical operations. Since a sequence of operations can be readily changed, the computer can solve more than one kind of problem.

1. C OM P U
TERS
AND DE
VICES
Helping improve education
Stephanie Alonso

2. A computer is a programmable machine.
Main characteristics:
• it responds to a specific set
of instructions in a well-defined manner.
• it can execute a prerecorded list of
instructions (a program)

3. The actual
machinery wires,transitors,
and circuits -- is
called HARDWARE

4. • Instructions and data
in a computer are
called SOFTWARE and
it is also known
as computer
programs.
•
Clearly-defined
instructions that upon
execution, instruct
hardware to perform
the tasks for which it
is designed for.

6. • Every computer that
is connected to the
Internet is part of a
network.
• We may use a
modem and dial a
local number to
connect to an
Internet Service
Provider(ISP). At
work, you may be
part of a local area
network (LAN).

7. Program that, after being
initially loaded into the
computer by a boot
program manages all the
other programs in a
computer. (OS)

8. Allow computers to exchange data. In computer
networks, networked computing devices pass
data to each other along data connections.