INPUT AND OUTPUT DEVICES ANSWER KEY
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1 INPUT AND OUTPUT DEVICES ANSWER KEY 1. Graph plotter and projector 2. Remote control- operating a television Keyboard- entering text when writing a book Touch screen selecting options in a tourist information kiosk Chip reader- reading information from a credit card Graphics tablet inputting freehand drawings into a computer 3. A- Multimedia projector B-Laser printer C-Dot matrix Printer D-Speakers 4. Barcode reader- inputting code numbers from products at a POS terminal Microphone inputting voiceovers into presentation software Mouse- selecting options from a list Numeric keypad- inputting PIN at an ATM Optical mark reader- inputting data from a school register 5. As surgeons use gloves it will be difficult to control other devices. It is easier to keep clean than other devices 6. A- Remote control B-Touch Pad C-Webcam D-numeric keypad 7. A- temperature sensor B-Chip reader C-Joystick D- Digital camera E-OMR 8. Laser printer/inkjet printer higher quality output than Dot matrix printer Laser printer/inkjet printer produce faster output than Dot matrix printer Laser printer/inkjet printer are relatively quiet compared to Dot matrix printer Laser printer/inkjet printer is susceptible to break down in oily/dirty conditions but Dot matrix printer is less likely to break down in oily/dirty conditions Laser printer/inkjet printer has more expensive running costs than dot matrix. Laser printer/inkjet printer are cheaper to buy than dot matrix Inkjet printer. 9. A-TFT Monitor, B-CRT Monitor, C-Inkjet printer, D-graph Plotter 10. A) OCR, B)Webcam, C)Inkjet Printer, D) Motor, E)barcode reader 11. A multimedia projector, remote control, presentation software 12. To input data at an information kiosk touch screen To input data from a product in a supermarket- barcode reader To input a PIN- numeric keypad To input freehand drawings- graphics tablet
2 13. Laser printer Produce High quality output Fast output Relatively quiet To print out invoices/letters etc. Relatively cheap to buy Graph plotter High quality output Capable of very large printouts Print out car designs Dot matrix printer Cheaper running costs Can work in industrial environment. Can make instantaneous copies Can print continuously Requires multipart stationery Can print pay slips 14. A- Tracker ball, B-scanner, C-Chip reader, D-Joystick 15. A. graph plotter B. Projector C. Pressure sensor D. Touchpad E. Microphone 16. To produce high quality hard copy- laser printer To print on multipart forms- dot matrix printer To move objects in a computer controlled system- motor To output voiceovers- speakers 17. A. Pressure sensor, temperature sensor, moisture sensor B. Computers work with digital data. Sensors produce analog data C. analog to digital computer 18. Laser printer advantages Fast output Relatively quiet Cheap to buy compared to dot matrix printer Laser printer disadvantages More expensive running costs than dot matrix Inkjet printer advantages Faster output than dot matrix printer Relatively quiet compared with dot matrix printer Cheap to buy Inkjet printer disadvantages Ink more expensive than dot matrix Ink needs changing regularly on long print runs Difficult to print a sealed secure payslip Dot matrix printer advantages Cheaper running costs Continuous paper feed available Can print multi part forms Can print through a payslip cover Can produce carbon copies High quality is not needed when printing pay slips
3 Dot matrix printer disadvantages More expensive to buy Noisy Relatively slow 19. Buzzer, Plotter 20. A- Multimedia projector B-Speakers C-Motor D-Dot Matrix Printer 21. A. Graphics Tablet B. A Pressure sensor C. Tracker ball D. Graph Plotter E. Buzzer 22. To input text from a printed document- OCR To input data from a bank cheque- MICR To input data from a bank card- chip reader To input data from a product at a POS- barcode reader 23. Graphics tablet, touchpad A. Microphone B. Scanner C. Pen drive D. webcam 24. A. Barcode reader B. Laser Printer C. Temperature sensor D. Graphics Tablet E. Speaker 25. To produce very large high quality hard copy- Plotter To display data from a computer on to a large screen multimedia projector To alert mobile phone users to incoming calls- buzzer To output multipart forms- dot matrix printer 26. A. movement or proximity sensor- detect movement Sound sensor detect any noise made Light sensor- detect break in light 27. A- Magnetic Stripe B-Chip C-Optical Marks D-Bar code 28. Buzzer, Monitor
4 29. A. Microphone B. Remote control C. Keyboard D. chip Reader E. Joystick 30. OMR: stands for Optical Marks Recognition. It identifies the pen or pencil marks made. Used in exam papers or school registers. OCR: stands for Optical Character Recognition. It identifies the characters in a scanned document and converts to text for use with other software. Used in processing passports, id cards etc. MICR: stands for Magnetic Character Recognition. It recognizes the characters written in magnetic ink and compare with characters stored in computer. It is used to process bank cheques. 31. Used to read magnetic data on cheques- MICR Used to read car number plates OCR Used when entering handwritten text- OCR Used to read multiple choice examination responses- OMR 32. A printer that uses a toner Laser A printer that uses continuous stationery- dot matrix A printer that can be used to make physical models- 3D A printer that prints layer by layer 3D 33. A. RFID reader sends radio waves to the RFID antenna in the tag. Tag sends radio waves back to reader. Radio waves move from antenna to the chip. A signal is generated and sent back to the RF system. B. Goat passes the RFID reader. RFID reader extracts data from the tag. The ID is compared with data in the database. The feed for the goat is then selected. 34. A. sensors can drain power from the car. The sensors need to be turned off in the traffic jam. If the car s computer malfunction sensor won t work. 35. A. numeric keypad B. Interpreter C. 3D Printer D. Speaker 36. Mouse, Remote control, touch Screen 37. A. system B. Application C. Printer D. Compiler 38. Debit card- Chip and pin reader Bank cheques- MICR A candidate s responses for multiple choice examinations- OMR A label on a can of soup- bar code reader 39. A. True B. True C. false D. false 40. Bar code reader, magnetic stripe reader, RFID Chip reader 41. Same as Q.30
5 42. Data from starting pistol is read by this device- sound sensor This device detects that the athlete has left the starting block- pressure sensor When the light beam is broken the data is read by this device- infra-red sensor 43. A- dot matrix b- inkjet C- laser D- 3D 44. A. true B. false C. false D. true 45. A. keypad/touchscreen/barcode / scanner/ chip reader B. Printer/ Monitor/ Speaker/ Buzzer 46. Dot Matrix Printer- Impact Inkjet, Laser, 3D- non-impact 47. A. washing machine sends out radio signal to read the data from RFID. They act as a passive transponder. B. it stops clothes being incorrectly washed. It allows wash cycle to set automatically know the amount of water to use avoiding wastage. 48. A. barcode reader B. microphone C. Magnetic Ink character Recognition D. Retina Scanner 49. a. Tablets can be customized to individual needs Created as needed therefore reducing waste Patient gets the drugs quicker b. Cost of buying the printer is expensive Materials are expensive Can be used for illegal production of drugs 50. A. Dot Matrix Printer B. thin Film Transistor C.3D Printer D. touch screen 51. A. Keyboard B. Mouse C. Temperature sensor D. Joystick 52. A. Student ID Number, Student name B. Dedicated scanner device shines a beam of light onto the form. Light is reflected back to the sensors.marks reflect less light. So sensors are used to identify position of marks. Computer compares these with correct answer positions. C. If the marks don't fill the space completely they may not be read correctly. If the marks are not in a dark enough pencil they may not be read correctly If more than one lozenge shaded in result is invalidated
6 53. A. Touchpad b. Joystick C. Keyboard D. scanner 54. A. Account number, Bank Code, Cheque number B. It requires a special Magnetic Ink Character reader. Details are scanned.the magnetic ink on the cheque passes over a magnet in the reader which magnetizes the ink.the MICR reader then reads the magnetic signal given out by the magnetic ink characters on the cheque. Each character produces a unique signal which is read and translated by the MIC reader. C. More difficult to forge Even if overwritten/damaged the information can still be read by computer 55. A. RFID Reader B. OCR Reader C. Chip reader D. Magnetic stripe reader 56. A. true b. true c. false d. false 57. A. Name,Passport number,date of birth B. The chip is presented near a computer with a radio-frequency scanner. The scanning antenna puts out radiofrequency signals in a relatively short range. It provides a means of communicating with the transponder/the RFID tag. 58. C. More secure than a traditional passport as biometric measurement data is difficult to forge More rapid flow at security check points/quicker than reading it manually Data more difficult to copy. Larger amount of information can be stored Disabled people find it easier than signing Reduces disputes at checkouts over validity of signature/saves time at checkouts Even when the card is stolen, the thief still needs the PIN, so it is much safer Magnetic stripe reader had to be in a fixed location. If the transaction did not take place near a terminal (in a restaurant, for example) the card had to be taken away from the customer to the card machine. Even at the terminal, the criminal could bend down in front of the customer and swipe the card on a hidden reader. Illegal cloning of cards easy, and a common occurrence. only the magnetic stripe can be copied, and a copied card cannot be used on a PIN terminal 59. A. Magnetic Ink Character Reader B. Barcode Reader C. Optical Mark Reader D. Magnetic Stripe Reader 60. Laser printer, multimedia projector 61. surgical and diagnostic aids, prosthetics and medical products, artificial blood vessels, designs of medical tools and equipment
7 62. A. an integrated circuit and an aerial which transmits and receive data B. He places his passport against the RFID reader. He stands in front of a scanner. If the fingerprint scanner is used his fingerprints are compared with those stored on the RFID chip. 63. A. keyboard B. scanner c. web cam D. keyboard 64. a. touchpad b. touch screen c. tracker ball a 65. A. laser printer b. graph plotter c. dot matrix printer d. dot matrix printer 66. A. joystick B. RAM c. Magnetic tape 67. A. OMR B. MICR C. Bar code reader D. OMR 68. A. touchpad, sensor B. printer, screen 69. A. MICR B. Sensor C. Tracker ball D. sensor 70. A. inkjet printer B. Dot Matrix Printer C. Laser Printer D. Graph Plotter
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