Lecture Exam Monday 5:30 - 6:30 bring a blue bubble sheet lab sections 10, 11, 12 take test in Classroom Building 302 lab sections 13, 14, 15 take test.

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Presentation transcript:

Lecture Exam Monday 5:30 - 6:30 bring a blue bubble sheet lab sections 10, 11, 12 take test in Classroom Building 302 lab sections 13, 14, 15 take test in Classroom Building 304 lab sections 16, 17 take test in Classroom Building 306 lab sections 19, 20 take test in Classroom Building 308

Studying for the Exam review your class notes read the assignments from the Parker book SW 4 through SW 8 SW 36 through SW 61 HW 4 through HW 32 HW 46 through HW 74 HW 88 through HW 121 download the review sheet

Lab Exam Next Week Given during your regularly scheduled lab period. Bring a 3.5” HD diskette with you to lab - you will turn it in. Save your files often! Budget your time.

Input and Output The slowest component of data processing.

Input Devices convert data and programs into a form that the CPU will understand

Keyboards differ with respect to: key placement and number of keys QWERTY Dvorak shape of the keyboard touch data entered from the keyboard is subject to human error

Pointing Devices A piece of input hardware that moves an onscreen pointer Some types: mouse trackball touchscreens pointing sticks touchpads

Pointing Devices

Source Data Automation The process of collecting data at their point of origin in digital form eliminates: duplicated effort delay extra handling errors

Optical Character Recognition The use of reflected light to input marks, characters, or codes Types: optical marks optical characters optical codes bar codes, POS systems

Other Types of Automated Data Entry Magnetic Ink Character Recognition (MICR) image scanners digital cameras handwriting recognition devices magnetic strips smart cards biometric systems voice-input devices

AIEEWAHNTODUHPAHSZEHT Eye went toad a posse it Aye one toe dub a set I want to deposit

Output Devices Convert bits into a form that is understandable to humans display devices printers speakers need a sound card voice output devices

Display Devices video display terminal (VDT) monitors dot pitch resolution graphics standards VGA, SVGA Flat Panel Displays liquid crystal displays

Printers quality of print dots per inch (dpi) 1440 x 720 dpi speed of printer pages per minute (ppm) 16ppm b&w; 5ppm color some have network cards and memory

Dots per inch

Impact Printers Pins press into an ink soaked ribbon forcing ink onto the page. Advantages: economical to buy and run can print multipart forms Disadvantages noisy, slow

Character Formation on a Dot-Matrix Printer

Printers Nonimpact printers ink jet laser

Copyright (c) 1998 by Harcourt Brace & Company. All rights reserved.

Voice Output Devices Two types digitize voice message, store, convert back to voice message synthetic speech stores words and creates sentences

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