DC014 Lecture Note & Tutorial

Types of Input Devices














1. Keyboard






2. Pointing Devices






3. Touch Screen






4. Scanner






5. Pen Input






6. Voice Input






7. Video Input






8. Biometric Input

Keyboard















• Keyboard is an input device that contains





keys that users can press to enter data and





instructions into a computer.






• Desktop computer keyboards typically have





from 101 to 105 keys.







• QWERTY is the most common keyboard





layout.

Keyboard















• Keyboard is an input device that contains





keys that users can press to enter data and





instructions into a computer.






• Desktop computer keyboards typically have





from 101 to 105 keys.







• QWERTY is the most common keyboard





layout.

Keyboard















• All desktop computer keyboards have a typing




area that includes the letters of the alphabet,





numbers, punctuation marks, and other basic




keys.




• Many desktop computer keyboards also have a





numeric keypad on the right side of the




keyboard.




• A keyboard also contains other keys that allow





users to enter data and instructions into the




computer.

Keyboard















• All desktop computer keyboards have a typing




area that includes the letters of the alphabet,





numbers, punctuation marks, and other basic




keys.




• Many desktop computer keyboards also have a





numeric keypad on the right side of the




keyboard.




• A keyboard also contains other keys that allow





users to enter data and instructions into the




computer.

Three (3) Types of Keyboard















1. Gaming keyboard







2. Wireless keyboard






3. Ergonomic keyboard

Three (3) Types of Keyboard















1. Gaming keyboard







2. Wireless keyboard






3. Ergonomic keyboard

Gaming keyboard















• A gaming keyboard is a keyboard designed





specifically for users who enjoy playing





games on the computer.




• Gaming keyboards typically include





programmable keys so that gamers can





customize the keyboard to the game being





played.


Gaming


Keyboard

Gaming keyboard















• A gaming keyboard is a keyboard designed





specifically for users who enjoy playing





games on the computer.




• Gaming keyboards typically include





programmable keys so that gamers can





customize the keyboard to the game being





played.


Gaming


Keyboard

Wireless keyboard















• Transmits data to the system unit using





wireless technology, such as radio wave





(bluetooth), or infrared light wave.













































Wireless


Keyboard

Wireless keyboard















• Transmits data to the system unit using





wireless technology, such as radio wave





(bluetooth), or infrared light wave.













































Wireless


Keyboard

Ergonomic keyboard















• An ergonomic keyboard has a design that





reduces the chance of wrist and hand





injuries.






• The goal of ergonomics is to incorporate





comfort, efficiency, and safety in the design





of the workplace.






























Ergonomic Keyboard

Ergonomic keyboard















• An ergonomic keyboard has a design that





reduces the chance of wrist and hand





injuries.






• The goal of ergonomics is to incorporate





comfort, efficiency, and safety in the design





of the workplace.






























Ergonomic Keyboard

Pointing Devices















• A pointing device is an input device that





allows a user to control a pointer on the





screen.

Pointing Devices















• A pointing device is an input device that





allows a user to control a pointer on the





screen.

Pointing Devices















• A pointing device can be used to:






Move the insertion point;





Select text, graphics and other objects;






Click buttons, icons, links and menu





commands.

Pointing Devices















• A pointing device can be used to:






Move the insertion point;





Select text, graphics and other objects;






Click buttons, icons, links and menu





commands.

Examples of Pointing Devices















• Mouse






• Is a pointing device that fits under the





palm of your hand comfortably to control




movement of a pointer on the screen.










































Mouse

Examples of Pointing Devices















• Mouse






• Is a pointing device that fits under the





palm of your hand comfortably to control




movement of a pointer on the screen.










































Mouse

Examples of Pointing Devices

















• Trackball






• a stationary pointing device with a ball on





its top or side. The ball in most trackballs




is about the size of Ping-Pong ball.








































Trackba


ll

Examples of Pointing Devices

















• Trackball






• a stationary pointing device with a ball on





its top or side. The ball in most trackballs




is about the size of Ping-Pong ball.








































Trackba


ll

Examples of Pointing Devices













• Touchpad






• a small, flat, rectangular pointing device





that is sensitive to pressure and motion.





































Touchpad

Examples of Pointing Devices













• Touchpad






• a small, flat, rectangular pointing device





that is sensitive to pressure and motion.





































Touchpad

Examples of Pointing Devices















• Pointing stick






• a pressure-sensitive pointing device





shaped like a pencil eraser that is




positioned between keys on a keyboard.

Examples of Pointing Devices















• Pointing stick






• a pressure-sensitive pointing device





shaped like a pencil eraser that is




positioned between keys on a keyboard.

Touch Screen















• A touchscreen is a touch-sensitive display





which do not require separate device for





input.

Touch Screen















• A touchscreen is a touch-sensitive display





which do not require separate device for





input.

Touch Screen















• User can interact with touch screen by





touching areas of the screen with finger or a





stylus pen.






• It is usually used at smartphones, automatic





teller machines (ATM), and information





kiosks.

Touch Screen















• User can interact with touch screen by





touching areas of the screen with finger or a





stylus pen.






• It is usually used at smartphones, automatic





teller machines (ATM), and information





kiosks.

Scanner















• Scanning devices translate images, texts,





drawings, pictures and similar items into a





digital form for direct entry to the computer.

Scanner















• Scanning devices translate images, texts,





drawings, pictures and similar items into a





digital form for direct entry to the computer.

Four (4) Types of Scanners















1. Flatbed







2. Pen or handheld




Flatbed
3. Sheet-Fed







4. Drum

















Handheld
















Drum




Sheet-Fed

Four (4) Types of Scanners















1. Flatbed







2. Pen or handheld




Flatbed
3. Sheet-Fed







4. Drum

















Handheld
















Drum




Sheet-Fed

Pen Input















• Pen Input is used to write, draw or make





selection on the flat surface.











• Two examples of pen input:





i. Stylus




ii. Digital pen

Pen Input















• Pen Input is used to write, draw or make





selection on the flat surface.











• Two examples of pen input:





i. Stylus




ii. Digital pen

Examples of Pen Input













• Stylus – small metal or plastic device that looks like a




tiny pen but uses pressure instead of ink. It is used to




write or draw on a screen.



–It designed to be used with graphics tablets or devices that




use touch screen input.



–Usually for more accurate navigation and keeps oils from



user’s fingers from getting on the device's screen.

Examples of Pen Input













• Stylus – small metal or plastic device that looks like a




tiny pen but uses pressure instead of ink. It is used to




write or draw on a screen.



–It designed to be used with graphics tablets or devices that




use touch screen input.



–Usually for more accurate navigation and keeps oils from



user’s fingers from getting on the device's screen.

Examples of Pen Input















• Digital pen- slightly larger than a stylus, is an input




device that captures and converts a user’s handwriting




or drawing into a digital format.





–It has one or more buttons on the pen that allows to perform




a special function, such as digital eraser and changing the


brush type or size.






–Because of these additional capabilities, they'll also require



batteries.





Digital Pen

Examples of Pen Input















• Digital pen- slightly larger than a stylus, is an input




device that captures and converts a user’s handwriting




or drawing into a digital format.





–It has one or more buttons on the pen that allows to perform




a special function, such as digital eraser and changing the


brush type or size.






–Because of these additional capabilities, they'll also require



batteries.





Digital Pen

Voice Input















• Voice input is the process of entering input





by speaking into a microphone.













• The microphone maybe built-in the





computer or device, in a headset, or an





external peripheral device.

Voice Input















• Voice input is the process of entering input





by speaking into a microphone.













• The microphone maybe built-in the





computer or device, in a headset, or an





external peripheral device.

Video Input












• Video input is the process of capturing full-






motion images and storing them on a





computer’s storage medium such as hard






drive or optical disc.
















• Examples of video input devices:







– Digital video camera





– Web cam














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Video Input












• Video input is the process of capturing full-






motion images and storing them on a





computer’s storage medium such as hard






drive or optical disc.
















• Examples of video input devices:







– Digital video camera





– Web cam














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Examples of Video Input












• Digital video camera







– A device that records video as digital signals,





which can be transferred into a computer by




connecting the video device to the computer.














• Web cam







– A type of digital camera attached to or built in a




computer that enables user to capture video and





still images and share them through the Internet.











66

Examples of Video Input












• Digital video camera







– A device that records video as digital signals,





which can be transferred into a computer by




connecting the video device to the computer.














• Web cam







– A type of digital camera attached to or built in a




computer that enables user to capture video and





still images and share them through the Internet.











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Biometric Input















• Biometric input is a technology of





authenticating a person’s identity by





verifying a personal characteristic.













• Technology to ensure only authorized





personnel has access to a protected





establishments, based on their physical




traits.

Biometric Input















• Biometric input is a technology of





authenticating a person’s identity by





verifying a personal characteristic.













• Technology to ensure only authorized





personnel has access to a protected





establishments, based on their physical




traits.

Biometric Input















• A biometric device translates a personal





characteristic (the input) into a digital code





that is compared with a digital code stored in




the computer.














• If the digital code in the computer does not





match the personal characteristic’s code, the




computer denies access to the individual.

Biometric Input















• A biometric device translates a personal





characteristic (the input) into a digital code





that is compared with a digital code stored in




the computer.














• If the digital code in the computer does not





match the personal characteristic’s code, the




computer denies access to the individual.

Examples of Biometric Technology














• Fingerprints






• Hand geometry






• Facial features






• Voice






• Signatures






• Eye patterns







–Iris






–Retinal