I.T. - Input and Output

1. INPUT and
OUTPUT

2. I/O is short for input/output (pronounced
"eye-oh"). The term I/O is used to
describe any program, operation or
device that transfers data to or from a
computer and to or from a peripheral
device. Every transfer is an output from
one device and an input into another.

4. Input is any information or
data that is entered or sent to
the computer to be processed.
.
An Input Device is a piece of
hardware that is used to enter
data into a computer or content
into a computer system.

7. Manual input devices are those
peripheral accessories of a
computer system that allow
users to directly interact with
that computer and its systems.
Examples: mouse, keyboard, joystick,
digital camera, and microphone

8. Automatic input devices are
those peripheral accessories of
a computer system that enable
data to be entered without
human intervention.
Examples: barcode reader, sensors,
biometric devices, and magnetic stripe
readers

9. Mous
e
Keyboar
d
Joystic
k
Trackbal
l
Scann
er
Barcod
e
Reader
Microphon
e
Digital
Camera
Light
Pen
Webcam

10. Mouse
The mouse is
a computer input
device used to move
a cursor around the
screen.

11. Keyboard
A keyboard is a typewriter-style device,
which uses an arrangement of buttons
or keys, to act as mechanical levers or
electronic switches.

12. Microphone
A microphone is an
acoustic-to-electric
transducer or
sensor that converts
sound in air into an
electrical signal.

13. Digital Camera
The pictures in the camera can be
placed in a computer. The pictures
become information inside the
computer.

14. Scanner
A picture can be
placed in the
computer with the
use of a scanner.
The scanner takes
the picture
information and
puts it into the
computer.

15. Trackball
The trackball is
an upside-
down mouse that
rotates in place
within a socket.

16. Joystick
A joystick is an
input device
consisting of a
stick that pivots on
a base and reports
its angle or
direction to the
device it is
controlling.

17. Light Pen
A small,
photosensitive
device connected to
a computer and
moved by hand over
an output display in
order to manipulate
information in the
computer.

18. Barcode
Reader
A barcode
reader (or barcode
scanner) is an
electronic device for
reading
printed barcodes.

19. Webcam
A webcam is a video camera that feeds
or streams its image in real time to or
through a computer to computer
network.

22. Output is anything that is
displayed from the computer.
An Output Device is a piece of
hardware that obeys a computer
command to do something that is
real.

24. Printer
Plotter
Speakers
Monitor

25. Printer
A printer takes information from a
computer and prints it out.

26. Monitor
A monitor takes information and displays
it on the screen for you to look at.

27. Speakers
A computer uses
speakers to play
sound and music
from the
information it has.

28. Plotter
The plotter is
a computer printer
for printing vector
graphics. Plotters
are used to print
designs of ships
and machines,
plans for buildings
and so on.