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A ____ is an input device that collects specific data directly from the environment and transmits it to a computer PowerPoint Presentation
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A ____ is an input device that collects specific data directly from the environment and transmits it to a computer

A ____ is an input device that collects specific data directly from the environment and transmits it to a computer

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A ____ is an input device that collects specific data directly from the environment and transmits it to a computer

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  1. A ____ is an input device that collects specific data directly from the environment and transmits it to a computer • sensor

  2. What is the definition of a softcopy? • data in electronic form. • An output device must be used in order to view a softcopy.

  3. Printed output is referred to as a (an): • Hardcopy

  4. Pixel is short for? • Picture element

  5. A ____ converts a person’s speech into digital signals. • Speech-recognition system

  6. The image you see on the screen (monitor) is made up of tiny dots of light called? • pixels

  7. The science of measuring individual body characteristics. Biometrics

  8. The amount of space between the centers of adjacent pixels is referred to as the • Dot pitch (dp)

  9. What factors affect screen clarity? Dot pitch Resolution Color depth Refresh rate

  10. What is the definition of resolution? • The number of pixels (dots) per square inch.

  11. The smaller the ___ the better the screen image. • Dot pitch

  12. What type of monitor takes up less room on a desk? • CRT or • Flat-panel display? • Flat-panel display

  13. The higher the ____ the better the screen image. • Color depth • Resolution • Refresh rate

  14. The number of times per second that the pixels are recharged so that their glow remains bright. • Refresh rate

  15. The amount of information, expressed in bits, that makes up the color of a pixel is called? • Color depth

  16. Monitors fit in one of two possible categories. What are these categories? • CRT • Flat-panel display

  17. CRT stands for? • Cathode Ray Tube

  18. What type of flat-panel display screen is not as clear? • Passive-matrix

  19. A flat-panel display uses what type of technology • Liquid Crystal Display

  20. The three types of flat-panel display screens are? • Active-matrix • Passive-matrix • Gas plasma

  21. With what type of flat-panel display screen is each pixel on the screen controlled by its own transistor. • Active-matrix display

  22. How is the active-matrix display screen and the passive-matrix display screen different? • With the active-matrix each pixel on the screen controlled by its own transistor and with the passive-matrix each row or column of pixels on the screen is controlled by one transistor. • The active-matrix screen is more expensive. • The active-matrix screen has a better image.

  23. What type of flat-panel display screen is least expensive? • Passive-matrix

  24. Image clarity of a printer is measured in what? • dpi

  25. dpi stands for ? • dots per inch

  26. A sensor is • an input device that collects specific data directly from the environment and transmits it to a computer.

  27. A printer fits in one of two categories. What are those two categories? • Impact printer • Non-impact printer

  28. The term non-impact in reference to printers means what? • It forms characters and images without direct physical contact between the printing mechanism and the paper

  29. A printer that makes physical contact with the paper is called a (an) • Impact printer

  30. What are the types of impact printers? • Line printer • Dot-matrix

  31. What are the types of non-impact printers? • Laser • Ink-jet • thermal

  32. What type of printer forms an image on paper by spraying small droplets of ink? • Ink-jet

  33. What type of printer uses a drum treated with magnetically charged toner in order to transfer an image onto paper? • laser

  34. What type of printer uses colored waxes and heat to produce images by burning dots onto special paper. • Thermal printer

  35. What type of signal continuously varies? • Analog

  36. What type of signal takes on one of two states? • Digital

  37. What is the purpose of a modem? • To convert Digital Signals to Analog Signals & Back

  38. Modem is short for • modulate/demodulate.

  39. Sending modem does what? • converts digital signals into analog signals for transmission over phone lines (i.e. modulates).

  40. What type of modem demodulates (i.e. converts analog signals back into digital signals. • Receiving modem

  41. The use of television video and sound technology to make it possible for people in different locations to see, hear, and talk with one another is called? • Videoconferencing

  42. What is Groupware ? • Software that makes it possible for teams of co-workers to use networks of microcomputers to share information and to cooperate on projects.

  43. The term that refers to working at the office using telecommunication technology so that one can work at the office while at home. • Telecommuting

  44. What does the term “Virtual Office” mean. • An office that exists electronically and does not exist in a physical sense.

  45. What type of signal does a digital television use? (tricky!) • Digital signal

  46. A digital signal consists of ? • A series of 1’s and 0’s.

  47. Signals through a communications path can be sent one of what two ways? • Wired • Wireless

  48. What are the three methods of wired communication • Twisted-pair • Coaxial cable • Fiber-optic cable

  49. Between these three methods of wired communication, • Twisted-pair • Coaxial cable • Fiber-optic cable which one is least expensive? • Twisted-pair

  50. Between these three methods of wired communication, • Twisted-pair • Coaxial cable • Fiber-optic cable which one is resistant to interference? • Fiber-optic cable