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MRS: LARAIB ALI
WELCOME TO
COMPUTER
ONLINE CLASS.
INPUT AND OUTPUT DEVICES
CHAP #03
INPUT DEVICES
In computing, an input device is a pi
ece of equipment used to provide d
ata and control signals to an inform
ation processing system such as a c
omputer or information appliance. E
xamples of input devices include key
boards, mouse, scanners, digital cam
eras, joysticks, and microphones
Input and output devices
KEYBOARD
A computer keyboard is a typew
riter-style device which uses an a
rrangement of buttons or keys to
act as mechanical levers or electr
onic switches. Following the decli
ne of punch cards and paper tap
e, interaction via teleprinter-styl
e keyboards became the main in
put method for computers
Input and output devices
MOUSE
A mouse is a device that co
ntrols the movement of the
cursor or pointer on a displa
y screen. A mouse is a small
object you can roll along a h
ard, flat surface. ... As you m
ove the mouse, the pointer
on the display screen moves
in the same direction
Input and output devices
JOYSTICK
A joystick is an input device co
nsisting of a stick that pivots on
a base and reports its angle or
direction to the device it is cont
rolling. ... Joysticks are often us
ed to control video games, and
usually have one or more push-
buttons whose state can also be
read by the computer
Input and output devices
TRACKBALL
In computing, a trackball is a po
inting input device. It consists o
f a ball held by a socket contain
ing sensors to detect a rotation
of the ball about two axes. It is l
ike an upside-down mouse with
a ball that sticks out. The user r
olls the ball with the thumb, fin
gers or the palm of the hand to
move a cursor.
Input and output devices
TOUCH SCREEN
A touchscreen, or touch
screen, is a both input a
nd output device and nor
mally layered on the top
of an electronic visual dis
play of an information
Processing.
Input and output devices
Input and output devices
HOME WORK
Do exercise A,B,D
page no# 23,24
From chapter#03INPUT
AND OUTPUT DEVICES.
Input and output devices

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Input and output devices

  • 1. MRS: LARAIB ALI WELCOME TO COMPUTER ONLINE CLASS.
  • 2. INPUT AND OUTPUT DEVICES CHAP #03 INPUT DEVICES In computing, an input device is a pi ece of equipment used to provide d ata and control signals to an inform ation processing system such as a c omputer or information appliance. E xamples of input devices include key boards, mouse, scanners, digital cam eras, joysticks, and microphones
  • 4. KEYBOARD A computer keyboard is a typew riter-style device which uses an a rrangement of buttons or keys to act as mechanical levers or electr onic switches. Following the decli ne of punch cards and paper tap e, interaction via teleprinter-styl e keyboards became the main in put method for computers
  • 6. MOUSE A mouse is a device that co ntrols the movement of the cursor or pointer on a displa y screen. A mouse is a small object you can roll along a h ard, flat surface. ... As you m ove the mouse, the pointer on the display screen moves in the same direction
  • 8. JOYSTICK A joystick is an input device co nsisting of a stick that pivots on a base and reports its angle or direction to the device it is cont rolling. ... Joysticks are often us ed to control video games, and usually have one or more push- buttons whose state can also be read by the computer
  • 10. TRACKBALL In computing, a trackball is a po inting input device. It consists o f a ball held by a socket contain ing sensors to detect a rotation of the ball about two axes. It is l ike an upside-down mouse with a ball that sticks out. The user r olls the ball with the thumb, fin gers or the palm of the hand to move a cursor.
  • 12. TOUCH SCREEN A touchscreen, or touch screen, is a both input a nd output device and nor mally layered on the top of an electronic visual dis play of an information Processing.
  • 15. HOME WORK Do exercise A,B,D page no# 23,24 From chapter#03INPUT AND OUTPUT DEVICES.