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Understanding Input, Output, and Peripheral Devices in Computing

This guide explores the fundamentals of input and output devices, including keyboards, mice, printers, and digital cameras. Learn to identify various input devices such as mechanical and optical mice, and voice recognition technology, as well as output devices like inkjet and laser printers. Understand how devices connect to computers via USB, HDMI, and Ethernet, and the significance of features such as DPI in printers. The objective is to equip learners with the knowledge to describe and connect these essential peripherals.

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Understanding Input, Output, and Peripheral Devices in Computing

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  1. Computing Fundamentals Unit 2, Part 2- Input, Output, & Peripherals

  2. Objectives • Identify & describe input devices • Identify & describe output devices • Connect input & output devices to a computer • Identify common peripherals

  3. Allow data IN the computer Input Devices

  4. Keyboard- Input • Regular • Ergonomic • Wireless • Flexible • Virtual

  5. Input Device- Mouse • Mechanical Mouse (OLD) • Has a rubber ball under • Sensor detect movement • Must use mouse pad

  6. Input Device- Mouse • Optical • LED on bottom • No mouse pad needed • Not good on glass • Laser • Laser light on bottom • No mouse pad needed • 20x better sensitivity • Wireless • USB Receiver • Optical or Laser

  7. Voice Recognition- Input • Speak commands into PC & enter text • Software must be installed • Disabled people use

  8. Are these input devices?

  9. Digital Camera- Special Input • Capture still pics & videos • Point & shoot • DSLR • Pictures stored to media card • SD is most common • Transfer to computer

  10. Digital Camera Features • Lens/Zoom • Digital Zoom • Optical Zoom • Rechargeable Battery • NO ALKALINES! • Megapixels • Pixel= single dot • Mega= million • More= better prints • Touch screen • Wireless Transfer

  11. Project • Bring in your digital camera • Make a feature chart • Brand, Megapixels, Optical zoom, digital zoom, screen size, type of memory card, special features, type of battery

  12. Printers- Output Device • DPI • Dots per inch • More dots= better quality • 4800 x 1200 (H x V) • PPM • Pages per minute • Black & Color speeds • Color is slower

  13. Dot Matrix Printer- OLD • Dot Matrix • Pins hammer into ink ribbon • Connected paper with guide holes • Not good quality • Slow & noisy

  14. Inkjet Printers • Nozzles spray liquid ink • Very good quality • Quiet • Fast • Inexpensive

  15. Laser Printer • Laser inside • Toner is a powder • Thousands of pages from toner • Very fast printing • B&W or color • 4 color toners (CMYK)

  16. Other Printers • All-In-One • Print, copy, scan • Some have fax too • Inkjet & laser • Photo Printer • Small • 4 x 6 glossy • Plotter • Large paper • Drafting, posters

  17. More About Printers • How they connect • Wired- USB or network • Wireless • Print from any PC, phone, tablet • Make money from ink & toner • Printer: $50 • Ink Cost: $6 • Price You Pay: $20-$30

  18. Your Printer • Get your printer brand & model # • Look up: • Inkjet or Laser • All-in-one or not • dpi • ppm (black & color) • Connections • Ink or toner cost • Cost of printer • Cost of a ream of paper • Cost of a 3’ USB cable • Cost of 8 x 10 photo paper

  19. Output Devices • Data comes OUT of the computer • Name some

  20. Monitors • Video card in case sends images to monitor • CRT • Big & bulky • LCD & LED • Thin, flat-panel • Less energy • Connect w/ video cable & power

  21. Front of Case

  22. PC Connections

  23. PS/2 Ports • Purple • Keyboard • Green • Mouse • Both 6 pin female

  24. Video Display Ports • VGA • Blue • 15 pin female • Video only, analog • HDMI • Digital HD video & audio through one cable

  25. USB Ports • Transfer data & electricity • Plug and play (PnP) • “Hot swappable” • High speed • 2.0- fast; 10 songs/sec. • 3.0- faster; 100 songs/sec.

  26. Network Port • NIC or Ethernet • Connect to network • Use an Ethernet Cable or Network Cable

  27. Serial 9 port male RS-232 Old modems & mice Parallel & Serial • Parallel • 25 port female • IEEE 1284 • Old Printers

  28. Serial Parallel & Serial Devices • Parallel

  29. Modem • Modem • RJ11 • Phone/Line Jacks • 56kbps

  30. Audio Ports • Line In • Audio into PC • Record Player to PC • Line Out • Headphone • Speakers • Microphone

  31. Ports on Your Computer • Bring in Laptop or Take picture of laptop/desktop ports • Laptop- all sides • Print in class & label • View & connect wires to class PC’s • Practice connecting wires

  32. Review • Which video port sends HD audio & video through one cable? • HDMI • What common port transfers data and can charge your cell phone? • USB • How many pins is the old keyboard & mouse ports? • 6 pin female • The VGA port is what color and how many pins? • Blue, 15 pin female

  33. Review • Which port would you connect to get access to a network? • Ethernet • Joe wants to convert his old records to CD’s. Which port can you plug his record player into? • Line In • Which port is a common plug and play one? • USB

  34. PC Connections

  35. Review 1 • Practice Connecting Cables • Handout • What port would you connect the device to?

  36. Other Ports • S-video • HDMI • DVI • Firewire

  37. Review • Which part of the computer performs calculations and controls processes? • CPU • What is it called when people can speak into a PC and have it perform those commands? • Voice recognition • Which type of memory is volatile? • RAM

  38. Review • Which software translates speech into text? • Voice recognition • What is the name of the path that data travels on a motherboard? • Bus • Which type of storage device has no moving parts? • Flash/USB drive

  39. Computing Fundamentals Unit 2, Part 2- Input, Output, & Peripherals

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