1. Chapter 5
Input And Output
Input is any data and instructions entered into the memory of a computer. Input Device is any hardware component that allows users to enter data and instructions into a computer.

2. Chapter 5
Input Devices
Keyboard and pointing devices
pointing devices:
Mouse is a pointing device because it allows a user to control a pointer on the screen.
In GUI, a pointer is a small symbol on the screen whose location and shape change as a user moves a pointing device.
a pointing device can select text, graphics and other objects and click buttons, icons, links and menu commands.

3. Input Devices Categories
Chapter 5
Input Devices Categories
Input Devices
Keyboard
Cable keyboard
Wireless keyboard
Pointing Devices
Mouse
Mechanical
Optical
Trackball
Touchpad
Pointing Stick
Light Pen
Touch Screen
Pen Input
Audio Input
Digital Camera
Scanner and reading devices
Optical Scanner
Optical Reader
Barcode Reader
RFID reader
Magnetic strip card readers
MIRC reader
Biometric Input
Physical
Behavioral

4. Mouse There are 2 types: mechanical mouse and Optical mouse.
Chapter 5
Mouse
There are 2 types: mechanical mouse and Optical mouse.
Mechanical mouse has a rubber or metal ball on its underside.
You should place a mechanical mouse on a mouse pad.
Mouse pad is a rectangular rubber or foam pad that provides better traction than the top of a desk
Optical mouse uses devices that emit and sense light to detect the mouse’s movement.
Some use optical sensors; other use laser.

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7. Chapter 5
Trackball
Is a stationary pointing device with a ball on its top or side, Similar to a mechanical mouse that has a ball on the bottom.
To move the pointer using a trackball, you rotate the ball with your thumb, fingers or the palm of your hand.
It has one or more buttons that work just like mouse buttons.

8. Chapter 5
Touchpad
Is a small, flat, rectangular pointing device that is sensitive to pressure and motion.
To move the pointer, slide your fingertip across the surface of the pad.
You also can tap the pad’s surface to imitate mouse operations such as clicking.
Around the edge of the pad there are one or more buttons that work like mouse buttons.
Touchpad's are found most often on notebook computers.

9. Chapter 5
Pointing Stick
Is a pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboard.
To move the pointer you push the pointing stick with a finger.
IBM developed the pointing stick for its notebook computers.

10. Chapter 5
Light Pen
Is a handheld pointing device that detect the presence of light.
To select objects on the screen,
a user press the light pen against the surface of the screen
or points the light pen at the screen and then press a button on the pen.

11. Chapter 5
The Keyboard
Is an input device that contains keys users press to enter data and instructions into a computer.
Typing area
Numeric keypad
Function Keys
Media control buttons
Internet control
Desktop computer keyboard often attach to the System Unit using
Cable: a serial port or USB port.
Without cables :Ir or Bluetooth
Wireless keyboard or cordless keyboard, is a buttery-powered device that transmits data using wireless technology

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13. Touch screen Is a touch-sensitive display device.
Chapter 5
Touch screen
Is a touch-sensitive display device.
Users can interact with these device by touching areas of the screen.
Because touch screens require a lot of arm movements, you do not enter large amounts of data using a touch screen.
Many handheld game consoles have touch screens.

14. Chapter 5
Pen Input
Mobile users often enter data and instructions with a pen-type device.
With pen input ,users write, draw, and tap on a flat surface to enter input.
The surface maybe a monitor, a screen, a special type of paper or graphic tablet.

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Audio Input
Is the process of entering any sound into the computer such as speech, music, and sound effects.
User enter sound into computer via devices such as
microphones
tape players
CD/DVD players
radios

16. They use internal flash memory to store images.
Chapter 5
Other Types of Input
Digital Cameras
Allows users to take pictures and store the photographed image digitally instead of on traditional film.
They use internal flash memory to store images.
Others store images on mobile storage media, including a flash memory, memory stick and mini CD/DVD.

17. A digital camera's resolution is defined in pixels.
Chapter 5
Digital Cameras
A digital camera's resolution is defined in pixels.
The greater the number of pixels the camera uses to capture an image, the better the quality of the image.

18. Scanners and Reading Devices
Chapter 5
Scanners and Reading Devices
Some input devices save time by capturing data directly from a source document.
Optical scanner
Optical readers
Bar code readers
RFID readers
Magnetic strip card readers
Magnetic-ink character recognition reader.

19. Chapter 5
1- Optical scanner
Usually called a scanner Is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can process. Many scanner include OCR ( optical character recognition ) software, which can read and convert text documents into electronic files. OCR SW converts a scanned image into a text file that can be edited.

20. Chapter 5
2- Optical Readers
Is a device that uses a light source to read characters, marks and
codes and then converts them into digital data that a computer can
process.
Two technologies used by optical readers are
Optical character recognition.
Optical mark recognition.

21. A- Optical character recognition (OCR)
Chapter 5
A- Optical character recognition (OCR)
Involves reading handwritten, typewritten or printed text and translating the image into a form the computer can process.
Most OCR devices include a small optical scanner for reading characters and sophisticated SW to analyze what read.
It range from large machines that can read thousands of documents per minute to handheld that read one document at a time.

22. B- Optical mark recognition (OMR)
Chapter 5
Devices read hand-drawn marks such as small circles or rectangles.
One of the most familiar applications of optical mark recognition is the use of pencil bubble optical answer sheets in multiple choice question examinations.

23. 3- Bar Code Readers also called bar code scanner
Chapter 5
3- Bar Code Readers
also called bar code scanner
is an electronic device that uses laser beams for reading printed barcodes.
Bar code is an identification code that consists of set of vertical lines and spaces of different widths.
The bar code represent the data that identifies the manufacturer and the item.

24. 4- RFID Readers Radio-frequency identification readers
Chapter 5
4- RFID Readers
Radio-frequency identification readers
is a technology that uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person.
RFID tags, which contain a memory chip and an antenna, are available in many shapes and size.
RFID reader reads information on the tag via radio waves. It can be handheld devices or mounted in a stationary object such as a doorway.

25. Chapter 5
RFID Readers
Many retailer see RFID as an alternative to bar code identification because it dose not require direct contact or line-of-site transmission.
Other uses of RFID include tracking times of runners in a marathon; tracking location of soldiers, and airline baggage.

26. 5- Magnetic strip card readers
Chapter 5
5- Magnetic strip card readers
Often called a magstripe reader
Reads the Magnetic strip on the back of credit cards or other similar cards.
The strip contains information identifying you.
Some information stored in the strip includes your name, account number, the card expiration date, and a country code.
If the Magnetic strip card readers rejects your card, it is possible that the Magnetic strip is scratched, dirty or erased.
Exposure to magnetic field can erase the contents of a card’s magnetic stripe.

27. 6- MICR Reader Magnetic-ink character recognition
Chapter 5
6- MICR Reader
Magnetic-ink character recognition
Devices read text printed with magnetized ink.
MICR reader converts MIRC characters into a form the computer can process.
The banking industry almost exclusively uses MICR for check processing.
Bank routing no.
Account no.
Check no.
Check amount.

28. Chapter 5
Biometric Input
Is the technology of authenticating a person’s identity by verifying a personal characteristic.
Biometric devices grant users access to programs, systems, or rooms by analyzing some physiological or behavioral characteristic.
such as fingerprints, eye patterns, voice patterns, facial features, signatures and hand geometry.

29. Biometric Input Fingerprint scanner Face recognition system
Chapter 5
Fingerprint scanner
Face recognition system
Hand geometry system
Voice verification system
Signature verification system
Iris recognition system