Win OS & HardwareWin OS & Hardware

InputInput

Getting data into the computerGetting data into the computer

InputInput

There are 4 types of input:There are 4 types of input:

TextText

GraphicsGraphics

AudioAudio

VideoVideo

KeyboardKeyboard

Keyboard – the primary input device Keyboard – the primary input device

KeyboardKeyboard

A keyboard is a series of switches A keyboard is a series of switches connected to a microprocessor that connected to a microprocessor that monitors the state of each switch monitors the state of each switch

and initiates a specific response to and initiates a specific response to a change in that state.a change in that state.

KeyboardKeyboard

The most common keyboards are: The most common keyboards are:

101-key Enhanced keyboard 101-key Enhanced keyboard

104-key Windows keyboard 104-key Windows keyboard

82-key Apple standard keyboard 82-key Apple standard keyboard

108-key Apple Extended keyboard 108-key Apple Extended keyboard

MouseMouse

Mouse was originally invented at Mouse was originally invented at Xerox’s Palo Alto Research Center Xerox’s Palo Alto Research Center

(PARC) in the late 70’s(PARC) in the late 70’s

MouseMouse

Mice where first introduced to the Mice where first introduced to the public with the introduction of the public with the introduction of the

Apple Macintosh in 1984Apple Macintosh in 1984

MouseMouse

Primary pointing device – Primary pointing device –

it moves a cursor on screen it moves a cursor on screen corresponding to the movement of corresponding to the movement of

the mouse by the userthe mouse by the user

MouseMouse

Types of mice:Types of mice:

Roller BallRoller Ball

Track BallTrack Ball

OpticalOptical

Light PenLight Pen

Graphic StylusGraphic Stylus

MouseMouse

Roller Ball:Roller Ball:

MouseMouse

Track Ball:Track Ball:

MouseMouse

Optical: (LED)Optical: (LED)

MouseMouse

Optical: (LASER)Optical: (LASER)

MouseMouse

Light PenLight Pen

MouseMouse

Graphic StylusGraphic Stylus

MouseMouse

Mouse Interfaces:Mouse Interfaces:

PS/2PS/2

USBUSB

SerialSerial

MouseMouse

PS/2PS/2

MouseMouse

USBUSB

MouseMouse

SerialSerial

ScannerScanner

Optical Device similar to a copierOptical Device similar to a copier

ScannerScanner

Designed to make copies of images Designed to make copies of images & text for use with a computer& text for use with a computer

ScannerScanner

ImagesImages

Converts Analog signal copy to a Converts Analog signal copy to a Digital signal copy that a computer Digital signal copy that a computer

can usecan use

ScannerScanner

TextText

Converts the text into digital format Converts the text into digital format via OCR (Optical Character via OCR (Optical Character

Recognition) softwareRecognition) software

ScannerScanner

OCROCR

Recognizing the text on a document Recognizing the text on a document to be able to convert it to editable to be able to convert it to editable text a word processing or other text a word processing or other

software can usesoftware can use

Digital CameraDigital Camera

Allows users to take pictures and Allows users to take pictures and store the photographed images store the photographed images

digitally. digitally.

Digital CameraDigital Camera

When you take a picture, light When you take a picture, light passes into the camera lens, which passes into the camera lens, which

focuses the image on a focuses the image on a charge-charge-coupled device (CCD)coupled device (CCD). The CCD . The CCD generates an analog signal that generates an analog signal that

represents the image.represents the image.

Digital CameraDigital Camera

An analog-to-digital converter An analog-to-digital converter (ADC) converts the analog signal to (ADC) converts the analog signal to

a digital signal. A a digital signal. A digital signal digital signal processor (DSP) processor (DSP) stores the digital stores the digital

image on the camera’s storage image on the camera’s storage media. media.

Digital CameraDigital Camera

The images can be transferred to a The images can be transferred to a computer via a USB/Serial/Firewire computer via a USB/Serial/Firewire

connectionconnection

AudioAudio

Recording sound for use with a Recording sound for use with a computercomputer

AudioAudio

Voice RecognitionVoice Recognition

Computer software interprets Computer software interprets spoken words and converts them spoken words and converts them

into digital forminto digital form

AudioAudio

MusicMusic

Computer software interprets music Computer software interprets music signals from Midi (Musical signals from Midi (Musical

Instrument Digital Interface) Instrument Digital Interface) compatible instruments and compatible instruments and

converts them into digital formconverts them into digital form

AudioAudio

MusicMusic

Direct recording of music through a Direct recording of music through a sound card input interfacesound card input interface

Wav (Wave files) a digital Wav (Wave files) a digital representation of an analog signalrepresentation of an analog signal

VideoVideo

Converting analog signal to a digital Converting analog signal to a digital signal or direct digital transfer to the signal or direct digital transfer to the

computercomputer

VideoVideo

USB or FireWire interfaceUSB or FireWire interface

VideoVideo

On the computer can be edited via On the computer can be edited via NLE (Non-Linear Editing) softwareNLE (Non-Linear Editing) software

InputInput

All input devices regardless of type All input devices regardless of type allow us to enter some form of data allow us to enter some form of data

into the computer for use with into the computer for use with software or for storagesoftware or for storage

InputInput

Questions?Questions?