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Input Devices

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Harman Grewal
Harman Grewal

Input devices allow users to enter data and instructions into a computer. Common input devices include keyboards, pointing devices like mice and touchpads, touch screens, cameras, microphones, and scanners. Keyboards are typically used to type and enter text, while pointing devices like mice allow users to control screen navigation. Emerging technologies are expanding input options with devices like touch screens, motion-sensing remotes, and biometric scanners.

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Input Devices INPUT DEVICES - Harman Grewal 1
What Is Input? Input is any data and instructions entered into the memory of a computer. 2 INPUT DEVICES - Harman Grewal
What Is Input? An input device is any hardware component that allows users to enter data and instructions into a computer. 3 INPUT DEVICES - Harman Grewal
Keyboard 4 INPUT DEVICES - Harman Grewal
Keyboard Most desktop computer keyboards have 5 INPUT DEVICES - Harman Grewal
INPUT DEVICES - Harman Grewal 6
Keyboard Types: 1. QWERTY keyboard Pronounced kwer-tee, refers to the arrangement of keys on a standard English computer keyboard or typewriter. The term comes from the fact the first 6 letters of the top row of keys are Q, W, E, R, T, and Y. The QWERTY design was patented by Christopher Sholes in 1874. 7 INPUT DEVICES - Harman Grewal
Keyboard Types 2. DVORAK keyboard is designed so that the middle row of keys includes the most common letters. In addition, common letter combinations are positioned in such a way that they can be typed quickly. The Dvorak keyboard was designed in the 1930s by August Dvorak, a professor of education, and his brother-in-law, William Dealy. 8 INPUT DEVICES - Harman Grewal
Keyboard Types QWERTY keyboard DVORAK keyboard 9 INPUT DEVICES - Harman Grewal
Connection Keyboards 1. Wireless Keyboards These use three basic types of connections: Bluetooth - is a wireless technology for exchanging data over short distances. Infrared (IR) - radiation is a type of electromagnetic radiation (a wave with electricity) . Radio Frequency - band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz and can be used for radio communications and broadcasting. 10 INPUT DEVICES - Harman Grewal
Connection Keyboards Bluetooth Infrared Radio Frequency 11 INPUT DEVICES - Harman Grewal
Connection Keyboards 2. Wired Keyboards PS/2 (Personal System/2) - is an electronic receptacle or plug found on computers. - It accepts a PS/2 cable with a mini-DIN connector, and is most often used to plug in a keyboard or mouse. USB (Universal Serial Bus) - is a standard cable connection interface on personal computers and consumer electronics. - allows stand-alone electronic devices to be connected via cables to a computer (or to each other). 12 INPUT DEVICES - Harman Grewal
Connection Keyboards INPUT DEVICES - Harman Grewal 13
Pointing Devices 14 INPUT DEVICES - Harman Grewal
Pointing Devices A mouse is a pointing device that fits under the palm of your hand comfortably. Most widely used pointing device on desktop computers. A mouse can be wired or wireless. 15 INPUT DEVICES - Harman Grewal
Pointing Devices Touchpad Pointing Stick A touchpad is a A pointing stick is a Trackball A trackball is a stationary pointing small, flat, rectangular pressure-sensitive device with a ball on pointing device that is pointing device its top or side. sensitive to pressure shaped like a pencil and motion. eraser that is positioned between keys on a keyboard. 16 INPUT DEVICES - Harman Grewal
Touch Screens and Touch-Sensitive Pads A touch screen is a touch-sensitive display device. 17 INPUT DEVICES - Harman Grewal
Pen Input With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections. 18 INPUT DEVICES - Harman Grewal
Touch Screens and Touch-Sensitive Pads Microsoft Surface Microsoft Surface is an upcoming series of tablets designed and marketed by Microsoft. Microsoft Surface is with a high-end graphics display that is built into something similar to a coffee table. And users interact with the applications by using only their fingers and other objects. INPUT DEVICES - Harman Grewal 19
Touch Screens and Touch-Sensitive Pads Touch-Sensitive Pad a specialized surface that can translate the motion and position of a user's fingers to a relative position on screen. 20 INPUT DEVICES - Harman Grewal
Other Types of Input Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects. Gamepad Joystick Light gun Dance Wii pad Remote 21 INPUT DEVICES - Harman Grewal
INPUT DEVICES - Harman Grewal 22
Other Types of Input A digital camera is a mobile device that allows users to take pictures and store them digitally. Studio camera Field camera Point-and-shoot camera 23 INPUT DEVICES - Harman Grewal
INPUT DEVICES - Harman Grewal 24
Other Types of Input 25 INPUT DEVICES - Harman Grewal
Other Types of Input Two factors affect the quality of digital camera photos: Resolution refers to the number of pixels in an image. Pixel is a tiny dot that Resolution make up the representation of an image in a computer's memory. 26 INPUT DEVICES - Harman Grewal
Other Types of Input Voice input is the process of entering input by speaking into a microphone. Voice recognition is the computers capability of distinguishing spoken words. Audio input is the process of entering any sound into the computer. 27 INPUT DEVICES - Harman Grewal
INPUT DEVICES - Harman Grewal 28
Other Types of Input Music production software allows users to record, compose, mix, and edit music and sounds. 29 INPUT DEVICES - Harman Grewal
Other Types of Input Video input is the process of capturing full-motion images and storing them on a computers storage medium. Record video on a digital video (DV) camera or use a video capture card to convert analog signals to digital. Connect the camera to a port on the system unit. Transfer video and images. 30 INPUT DEVICES - Harman Grewal
Video: Video Editing on Your Computer 31 INPUT DEVICES - Harman Grewal
Other Types of Input A Web cam is a video camera that feeds its images in real time to a computer. It enables a user to: Send e-mail messages with video Capture video and still images attachments Add live images to instant messages Broadcast live images over the Internet Make video telephone calls 32 INPUT DEVICES - Harman Grewal
Other Types of Input A video conference is a meeting between two or more geographically separated people. 33 INPUT DEVICES - Harman Grewal
Other Types of Input A scanner creates a file of the document in memory. Works in a manner similar to a copy machine. 34 INPUT DEVICES - Harman Grewal
Other Types of Input Optical character recognition (OCR) involves reading characters from ordinary documents. A turnaround document is a document you return to the company that creates and sends it. 35 INPUT DEVICES - Harman Grewal
Other Types of Input Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles. 36 INPUT DEVICES - Harman Grewal
Other Types of Input A bar code reader, also called a bar code scanner uses laser beams to read bar codes. 37 INPUT DEVICES - Harman Grewal
Other Types of Input Magnetic stripe card reader reads the magnetic stripe on the back of cards such as: Credit cards Entertainment cards Bank cards Other similar cards 38 INPUT DEVICES - Harman Grewal
Magnetic Stripe Cards 39 INPUT DEVICES - Harman Grewal
Other Types of Input MICR (magnetic ink character recognition) devices read text printed with magnetized ink. An MICR reader converts MICR characters into a form the computer can process. Banking industry uses MICR for check processing. 40 INPUT DEVICES - Harman Grewal
Other Types of Input Biometrics authenticates a persons identity by verifying a personal characteristic such as: Face Hand Fingerprint Recognition Geometry Reader System System Voice Signature Verification Retinal Verification System Scanner System 41 INPUT DEVICES - Harman Grewal
INPUT DEVICES - Harman Grewal 42

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Input Devices

  • 1. Input Devices INPUT DEVICES - Harman Grewal 1
  • 2. What Is Input? Input is any data and instructions entered into the memory of a computer. 2 INPUT DEVICES - Harman Grewal
  • 3. What Is Input? An input device is any hardware component that allows users to enter data and instructions into a computer. 3 INPUT DEVICES - Harman Grewal
  • 4. Keyboard 4 INPUT DEVICES - Harman Grewal
  • 5. Keyboard Most desktop computer keyboards have 5 INPUT DEVICES - Harman Grewal
  • 6. INPUT DEVICES - Harman Grewal 6
  • 7. Keyboard Types: 1. QWERTY keyboard Pronounced kwer-tee, refers to the arrangement of keys on a standard English computer keyboard or typewriter. The term comes from the fact the first 6 letters of the top row of keys are Q, W, E, R, T, and Y. The QWERTY design was patented by Christopher Sholes in 1874. 7 INPUT DEVICES - Harman Grewal
  • 8. Keyboard Types 2. DVORAK keyboard is designed so that the middle row of keys includes the most common letters. In addition, common letter combinations are positioned in such a way that they can be typed quickly. The Dvorak keyboard was designed in the 1930s by August Dvorak, a professor of education, and his brother-in-law, William Dealy. 8 INPUT DEVICES - Harman Grewal
  • 9. Keyboard Types QWERTY keyboard DVORAK keyboard 9 INPUT DEVICES - Harman Grewal
  • 10. Connection Keyboards 1. Wireless Keyboards These use three basic types of connections: Bluetooth - is a wireless technology for exchanging data over short distances. Infrared (IR) - radiation is a type of electromagnetic radiation (a wave with electricity) . Radio Frequency - band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz and can be used for radio communications and broadcasting. 10 INPUT DEVICES - Harman Grewal
  • 11. Connection Keyboards Bluetooth Infrared Radio Frequency 11 INPUT DEVICES - Harman Grewal
  • 12. Connection Keyboards 2. Wired Keyboards PS/2 (Personal System/2) - is an electronic receptacle or plug found on computers. - It accepts a PS/2 cable with a mini-DIN connector, and is most often used to plug in a keyboard or mouse. USB (Universal Serial Bus) - is a standard cable connection interface on personal computers and consumer electronics. - allows stand-alone electronic devices to be connected via cables to a computer (or to each other). 12 INPUT DEVICES - Harman Grewal
  • 13. Connection Keyboards INPUT DEVICES - Harman Grewal 13
  • 14. Pointing Devices 14 INPUT DEVICES - Harman Grewal
  • 15. Pointing Devices A mouse is a pointing device that fits under the palm of your hand comfortably. Most widely used pointing device on desktop computers. A mouse can be wired or wireless. 15 INPUT DEVICES - Harman Grewal
  • 16. Pointing Devices Touchpad Pointing Stick A touchpad is a A pointing stick is a Trackball A trackball is a stationary pointing small, flat, rectangular pressure-sensitive device with a ball on pointing device that is pointing device its top or side. sensitive to pressure shaped like a pencil and motion. eraser that is positioned between keys on a keyboard. 16 INPUT DEVICES - Harman Grewal
  • 17. Touch Screens and Touch-Sensitive Pads A touch screen is a touch-sensitive display device. 17 INPUT DEVICES - Harman Grewal
  • 18. Pen Input With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections. 18 INPUT DEVICES - Harman Grewal
  • 19. Touch Screens and Touch-Sensitive Pads Microsoft Surface Microsoft Surface is an upcoming series of tablets designed and marketed by Microsoft. Microsoft Surface is with a high-end graphics display that is built into something similar to a coffee table. And users interact with the applications by using only their fingers and other objects. INPUT DEVICES - Harman Grewal 19
  • 20. Touch Screens and Touch-Sensitive Pads Touch-Sensitive Pad a specialized surface that can translate the motion and position of a user's fingers to a relative position on screen. 20 INPUT DEVICES - Harman Grewal
  • 21. Other Types of Input Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects. Gamepad Joystick Light gun Dance Wii pad Remote 21 INPUT DEVICES - Harman Grewal
  • 22. INPUT DEVICES - Harman Grewal 22
  • 23. Other Types of Input A digital camera is a mobile device that allows users to take pictures and store them digitally. Studio camera Field camera Point-and-shoot camera 23 INPUT DEVICES - Harman Grewal
  • 24. INPUT DEVICES - Harman Grewal 24
  • 25. Other Types of Input 25 INPUT DEVICES - Harman Grewal
  • 26. Other Types of Input Two factors affect the quality of digital camera photos: Resolution refers to the number of pixels in an image. Pixel is a tiny dot that Resolution make up the representation of an image in a computer's memory. 26 INPUT DEVICES - Harman Grewal
  • 27. Other Types of Input Voice input is the process of entering input by speaking into a microphone. Voice recognition is the computers capability of distinguishing spoken words. Audio input is the process of entering any sound into the computer. 27 INPUT DEVICES - Harman Grewal
  • 28. INPUT DEVICES - Harman Grewal 28
  • 29. Other Types of Input Music production software allows users to record, compose, mix, and edit music and sounds. 29 INPUT DEVICES - Harman Grewal
  • 30. Other Types of Input Video input is the process of capturing full-motion images and storing them on a computers storage medium. Record video on a digital video (DV) camera or use a video capture card to convert analog signals to digital. Connect the camera to a port on the system unit. Transfer video and images. 30 INPUT DEVICES - Harman Grewal
  • 31. Video: Video Editing on Your Computer 31 INPUT DEVICES - Harman Grewal
  • 32. Other Types of Input A Web cam is a video camera that feeds its images in real time to a computer. It enables a user to: Send e-mail messages with video Capture video and still images attachments Add live images to instant messages Broadcast live images over the Internet Make video telephone calls 32 INPUT DEVICES - Harman Grewal
  • 33. Other Types of Input A video conference is a meeting between two or more geographically separated people. 33 INPUT DEVICES - Harman Grewal
  • 34. Other Types of Input A scanner creates a file of the document in memory. Works in a manner similar to a copy machine. 34 INPUT DEVICES - Harman Grewal
  • 35. Other Types of Input Optical character recognition (OCR) involves reading characters from ordinary documents. A turnaround document is a document you return to the company that creates and sends it. 35 INPUT DEVICES - Harman Grewal
  • 36. Other Types of Input Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles. 36 INPUT DEVICES - Harman Grewal
  • 37. Other Types of Input A bar code reader, also called a bar code scanner uses laser beams to read bar codes. 37 INPUT DEVICES - Harman Grewal
  • 38. Other Types of Input Magnetic stripe card reader reads the magnetic stripe on the back of cards such as: Credit cards Entertainment cards Bank cards Other similar cards 38 INPUT DEVICES - Harman Grewal
  • 39. Magnetic Stripe Cards 39 INPUT DEVICES - Harman Grewal
  • 40. Other Types of Input MICR (magnetic ink character recognition) devices read text printed with magnetized ink. An MICR reader converts MICR characters into a form the computer can process. Banking industry uses MICR for check processing. 40 INPUT DEVICES - Harman Grewal
  • 41. Other Types of Input Biometrics authenticates a persons identity by verifying a personal characteristic such as: Face Hand Fingerprint Recognition Geometry Reader System System Voice Signature Verification Retinal Verification System Scanner System 41 INPUT DEVICES - Harman Grewal
  • 42. INPUT DEVICES - Harman Grewal 42