ETE105_lecture 3.ppt

Computer Parts
 There are many
parts that work
together to make a
computer work.

Hardware
 Physical parts of the
computer, including
processor and
memory chips,
input/output
devices, tapes,
disks, modems,
cable, etc.

CPU
 The Central
Processing Unit

Processor
 The CPU – The chip
or chips that
interpret and
execute program
instructions and
manage the
functions of input,
output, and storage
devices.

Computer Case
 Contains the major
components of the
computer. It helps
protect them.

Monitor
 A display screen to
provide “output” to
the user. It is where
you view the
information your are
working on.

Video Card
 Connects the computer
to the monitor. It is a
circuit board attached
to the motherboard that
contains the memory
and other circuitry
necessary to send
information to the
monitor for display on
screen.

Keyboard
 Used to enter
information into the
computer and for
giving commands.

Mouse
 An input device
operated by rolling its
ball across a flat
surface. The mouse is
used to control the on-
screen pointer by
pointing and clicking,
double-clicking, or
dragging objects on the
screen.

Touchpad
 A pressure-sensitive
and motion sensitive
device used in place
of a mouse.

CD Rom Drive
 The drive that plays
CDs and reads data
that has been stored
on the CD.

CD
 Compact Disk – A
type of optical
storage device.

Floppy Disk Drive
 A device that holds
a removable floppy
disk when in use;
read/write heads
read and write data
to the diskette.

Hard Disk
 Magnetic storage
device in the
computer.

RAM
 Random Access Memory
RAM is a computer’s
temporary memory,
which exists as chips on
the motherboard near
the CPU. It stores data
or programs while they
are being used and
requires power.

Printer
 An output device
that produces a hard
copy on paper. It
gives information to
the user in printed
form.

Barcode Reader
 An input device that
converts a pattern of
printed bars into a
number that a
computer can read.
They are often used
by businesses to
quickly input price
and product
information.

Scanner
 A device that allows
pictures to be placed
into a computer.

Microphone
 Allows the user to
record sounds as
input to their
computer.

Speakers
 Used to generate or
reproduce voice,
music, and other
sounds.

Sound Card
 Connects the
speakers and
microphone to the
computer.

Modem
 The place where the
computer is
connected to the
phone line.

Network Card
 A circuit board that
connects the
computer to the rest
of the network
usually using special
cables.

Software
 Programs that tell
the computer what
to do. It provides
instructions that the
CPU will need to
carry out.

DOS
 Disk Operating System
This software connects the hardware with the
programs you want to run.
MS-DOS:
Microsoft DOS (Disk Operating System) is a
command line user interface. MS-DOS 1.0
was released in 1981 for IBM computers.

Windows
 A family of operating
systems developed and
produced by Microsoft
Corp. It provides a
software graphical user
interface (GUI) used on
IBM and compatible
computers.

ETE105_lecture 3.ppt

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