INPUT AND
OUTPUT
DEVICE
GROUP MEMBERS
DHRUV NAIK
VIRENDRA DODIA
NAURIN MOMIN
NISHA MOMIN
YASH SHAH
ROLLNO
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INPUT AND OUTPUT DEVICES
INTRODUCTION:-
INPUT AND OUTPUT DEVICES ARE THAT TYPES OF DEVICES WHICH
ARE RELATED TO OUR COMPUTER SYSTEM
INPUT ARE
THE SIGNALS OR DATA RECEIVED BY THE SYSTEM, AND
OUTPUT ARE THE SIGNALS OR DATA SENT BY THE SYSTEM..
INPUT AND
OUTPUT DEVICES WORKS ON THE PRINCIPLE OF 1 AND 0
THAT IS ON AND OFF.
1 MEANS ON
2 MEANS OFF
INPUT DEVICE
DEVICE THROUGH WHICH AN USER ENTERS THE DATA .
AFTER PROVIDING THE DATA THE INPUT DEVICES ACCEPT
THE INPUT , PROCESS THAT INPUT AND PROVIDE THAT
DESIRE OUTPUT.
SOME OF MOST COMMON USED INPUT DEVICES ARE
KEYBOARD , MOUSE ETC.
OUTPUT DEVICE
OUTPUT DEVICES ARE THE DEVICES WHICH ARE USED TO
GET THE OUTPUT.
OUTPUT DEVICES GIVES US THE FAVOURABLE DATA AND
THE RESULT OF THE AVALAIBLE INPUT.
SOME OF THE OUTPUT DEVICES ARE MONITERS,
PRINTERS , ETC.
ABOUT INPUT
DEVICES
1)
KEYBOARD
KEYBOARD IS USE TO ENTER TEXT INFORMATION INTO THE COMPUTER.
IT CAN ALSO BE USED TO ENTER THE COMMANDS DIRECTING THE
COMMANDS THE COMPUTERS TO PERFORM CERTAIN ACTIONS.
IN ADDITION TO THE KEYS OF THE MAIN KEY BOARD, KEYBOARDS CONSISTS
OF NUMERIC KEYPAD, A BANK OF EDITING KEYS AND ROW FUNCTIONS KEYS.
TYPES OF KEYBOARD
STANDARD KEYBOARD
WIRELESS KEYBOARD
FLEXIBLE KEYBOARD
BLUETOOTH KEYBOARD
2) MOUSE
THE MOUSE POINTING DEVICES SITS ON YOUR COMPUTER
SURFACE AND ITS MOVE WITH YOUR HANDS.
IN OLDEN MOUSE, A BALL ON THE BOTTOM OF THE MOUSE ROLLS ON
THE SURFACE U MOVES THE MOUSE, AN INTERNAL ROLLERS SENSE THE
BALL MOVEMENT AND TRANSMIT THE INFORMATION TO THE COMPUTER
VIA CORD OF THE MOUSE
THERE ARE TWO TYPES IN WHICH MOUSE ID CONNECTED TO
COMPUTER.
1) WIRED MOUSE 2) WIRELESS MOUSE
TYPES OF MOUSE
MECHANICAL MOUSE
CORDLESS LASER
MOUSE
WIRELESS OPTICAL MOUSE
3) TOUCHPAD
MOST LAPTOPS AND COMPUTERS TODAY HAVE A LAPTOP AND HAVE
TOUCH TOUCHPAD.
YOU MOVE ON THE SCREEN CURSORE BY SLIDING YOUR FINGERS ALONG THE
SURFACE OF THE TOUCH PAD..
TOUCHPAD HAVE ADVANTAGE OVER MOUSE THAT THEY TAKE MUCH LESS AREA
FOR THE USAGE.
THEY HAVE THE ADVANTAGES OVER THE TRACKBALLS THAT THEY HAVE NO
MOVING PARTS TO GET DIRTY AND RESULTS IN JUMPY CONTROLS
4) JOYSTICK AND JOYPAD
JOYSTICK
JOYPAD
JOYSTICKS AND OTHER GAME CONTROLLERS CAN ALSO BE CONNECTED
TO A COMPUTER AS POINTING DEVICES.
THEY ARE GENERALLY USED FOR PLAYING GAMES, AND NOT FOR
CONTROLLLING THE ON SCREEN CURSOR IN PRODUCTIVITY SOFWARE
5) GRAPHIC TABLET
A GRAPHICS TABLET CONSIST OF AN ELECTRONIC WRITING AND A SPECIAL
PEN THAT WORKS IT.
GRAPHICS TABLETS ALLOWS ARTIST TO MADE OR MADE GRAPHICAL
IMAGES WITH MOTIONS AND ACTIONS, SIMILARLY BY USING MORE TRADITIONAL
DRAWINGS TOOLS..
THE PEN OF GRAPHICS TABLETS IS PRESSURE SENSITIVE, SO PRESSING
HARDER OR SOFTER CAN RESULTS IN BRUSH STROKES OF DIFFERENT
WIDTHS..
6) SCANNERS
IT IS DEVICE THAT IMAGES A PRINTED PAGE OF GRAPHICS BY DIGITISING IT,
PRODUCING A IMAGE MADE UP OF TINY PIXELS OF DIFFERENT BRIGHTNESS
AND COLOR VALUES WHICH ARE REPRESENT NUMERICALLY AND SEND TO
COMPUTER.
SCANNER SCAN GRAPHICS, BUT THEY CAN ALSO SCAN PAGES OF TEXT
WHICH THEY CAN RUN THROUGH OCR SOFTWARE THAT IDENTIFISES THE
INDIVBIDUAL LETTERS, SHAPES, AND CREATES A TEXT FILE OF THE PAGE
CONTENT.
7) MICROPHONE
A MICRO PHONE CAN BE ATTACHED TO A COMPUTER TO RECORD SOUND.
A SOUND IS DIGITISED AND TURNED INTO NUMBERS THAT REPRESENTS THE
ORIGINAL ANALOUGE SOUND WAVES AND STORED IN THE COMPUTER TO
LATER PROCESSING.
8) MIDI-DEVICES
MIDI ( MUSICAL INSTRUMENT DIGITAL INTERFACE ) IS A SYSTEM DESIGNED
TO TRANSMIT INFORMATION BETWEEN ELECTRONIC INSTRUMENT
A MIDI MUSICAL KEYBOARD CAN BE ATTACHED TO A COMPUTER AND
ALLOW A PERFOMER TO PLAY MUSIC THAT IS CAPTURED BY A COMPUTER
SYSTEM AS A SEQUENCE OF A NOTES WITH ASSOCIATED TIMINGS..
ABOUT OUTPUT
DEVICES
1) CRT MONITOR ( CATHODE RAY TUBE )
CRT MONITOR
THE TRADITIONAL OUTPUT DEVICES HAS BEEN THE CRT ( CATHODE RAY TUBE
) MONITOR. CRT MONOTORS CONTAINS A LARGE CATHODE RAY TUBE THAT USES
AN ELECTRON BEAM OF VERIFYING STRENGTH TO PAINT A PICTURE INTO THE
COCLR PHOSPHORESCENT DOTS ON THE INSIDE OF THE SCREEN
RESEMBLE TELEVISION
USE PICTURE RAY TUBE TECHNOLOGY
LESS EXPENSIVE THAN LCD MONITORS
TAKE UP MORE SPACE AND MORE ENERGY THAN LCD MONITORS
2)LCD MONITOR (LIQUID CRYSTAL DISPLAY )
LCD MONITOR
CELLS SANDWICH BETWEEN TWO TRANSPARENT LAYERS FROM IMAGES.
USED FOR NOTEBOOK COMPUTERS, PDAs, CELLULAR PHONES AND PERSONAL
COMPUTER.
MORE EXPENSIVE THAN A CRT MONITOR.
TAKE UP LESS DESK SPACE AND USE LESS ENERGY THAN CRT MONITORS.
TYPES OF LCD MONITORS
PASSIVE-MATRIX LCD
ACTIVE-MATRIX LCD
GAS PLASMA DISPLAY
FIELD EMISSION DISPLAY
3) SPEAKER
COMPUTER SPEAKERS , OR MULTIMEDIA SPEAKERS , ARE EXTERNAL SPEAKERS,
COMMONLY EQUIPPED WITH A LOW-POWER INTERNAL AMPLIFIER. THE STANDARD
AUDIO CONNECTION IS 3.5mm (1/8 inch ) STEREO JACK PLUG OFTEN COLOR-CODED
TIME GREEM ( FOLLOWING THE PC 99 STANDARD ) FOR COMPUTER SOUND CARD. A
FEW USE AN RCA CONNECTOR FOR INPUT. THERE ARE ALSO USB SPEAKER WHICH
ARE POWERED FROM 5 volts AT 200 milliamps PROVIDED BY THE USB PORTS,
ALLOWING ABOUT 1- watt OF OUTPUT.
4) ARM ROBOT
AN ARM ROBOT IS A ROBOT MANIPULATOR, USUALLY PROGRAMMABLE, WITH
SIMILAR FUNCTION TO A HUMAN ARM. THE LINKS OF A SUCH A MANIPULATOR
ARE CONNECTED BY JOINTS ALLOWING EITHER ROTATIONAL MOTION OR
TRANSLATIONAL DISPLACMENT.
FOR EXAMPLE ROBOT ARMS IN AUTOMOTIVE ASSEMBLY LINES PERFORM A
VARIETY OF TASKS SUCH AS WELDING AND PARTS ROTATION AND PLACEMENT
DURING ASSEMBLY
5) PRINTERS
TYPES OF PRINTERS
DOT MATRIX PRINTER
INK JET PRINTER
LASER PRINTER
DOT MATRIX PRINTER
THIS IS THE OLDEST TYPE OF PRINTER.
THIS PRINTER OPERATES BY HAVING ITS PIN STRIKE AGAINST THE INK
RIBBON.
THE PRINT OUT FROM DOT MATRIX IS EASILY RECGNIZED BECAUSE OF
THE OBVIOUS LINES AND DOTS THAT YOU CAN SEE ON THE IMAGE OR
CHARACTER IT PRINTS.
INK JET PRINTER
BEFORE THE ADVENT OF LASER PRINTER , INK JET PRINTER ARE THE
MOST WIDELY USED PRINTER TYPE . THEY ARE CHEAPER THAN ANY OTHER
PRINTER TYPES AND PRODUCES QUALITY OUTPUT.
DISADVANTAGE OF THIS PRINTERS IS THAT THE PRINTING TIME WOULD
TAKE LONGER TIME.
IN THIS PRINTERS USES VARIABLY SIZED DROPLETS OF INK THAT IS
PROPELLED ONTO THE PAPER OR VARIOUS PRINT.
LASER PRINTER
A LASER PRINTER PRODUCES GOOD QUALITY IMAGES BY SAME TECHNOLOGY
THAT PHOTOCOPIES USE
IT IS FASTER THAN INKJET PRINTER
THEY ARE MORE EXPENSIVE THAN INK , BUT THEY ARE CHEAPER TO RUN
IN THE LONGER TERM
THIS IS MOST OFTEN PURCHASED PRINTER TODAY.
THE TEXT AND GRAPHICS ARE PRINTED WITH HIGH QUALITY RESULT.
