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Computer Literacy InputDevices Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy.

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Presentation on theme: "Computer Literacy InputDevices Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy."— Presentation transcript:

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2 Computer Literacy InputDevices

3 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy

4 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy

5 Pressure Sensitive Touch pads use a pressure-sensitive membrane that has a built-in grid of sensing wires. Computer Literacy

6 Infrared Infrared LEDs Photo detectors One way of implementing touch screen technology is by criss-crossing the screen with invisible beams of infrared light. When your finger nears the screen, it interrupts the beams of light and the coordinate is determined. Computer Literacy

7 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy

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10 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy

11 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

12 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

13 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

14 OCR Most OCR devices store character patterns in ROM. Characters that are read are compared with the character patterns stored in memory and are matched on the basis of the lightness and darkness. Computer Literacy

15 FONTS

16 Font Characteristics Font Characteristics  Orientation - Portrait or landscape  Spacing - Proportional or fixed  Pitch - Characters per horizontal inch  Point size - Character height  Style - Upright or italic  Stroke weight - Medium or bold  Typeface - Courier, Times Roman, Helvetica, etc. Computer Literacy

17 Orientation Orientation PortraitLandscape Computer Literacy

18 Spacing Spacing WI WI FIXED PROPORTIONAL Computer Literacy

19 This pitch is 10 characters/inch This pitch is 12 characters/inch This pitch is 16.67 characters/inch Number of Characters per horizontal inch Pitch Computer Literacy

20 Times Roman 2 pt Times Roman 6 pt Times Roman 12 pt Times Roman 24 pt Times Roman 36 pt Times Roman 72 pt Computer Literacy Point Size (1 pt = 1/72 inch)

21 Style UPRIGHT ITALIC Computer Literacy

22 Stroke Weight Stroke Weight MEDIUM BOLD BOLD BOLD Computer Literacy

23 Type Face Type Face Times Roman Helvetica Trafalgar Algerian Wide Latin Script Computer Literacy

24 Serifs UP!!! Serifs UP!!! Times Roman The World’s Most Readable Serif Typeface Aa Bb Cc ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqurstuvwxyHelvetica The International Sans Serif Typeface Aa Bb Cc ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqurstuvwxy Computer Literacy

25 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

26 MICR Check Routing Symbol ABA Transit Number Account Number Process Control Number Amount Computer Literacy

27 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

28 UPC Start / End Markers Manufacturer ID# Product ID# 4 8 0 0 1 2 6 5 6 8 Computer Literacy

29 Mark sense OCR MICR UPC Graphics/Text Scanners Computer Literacy

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31 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER Computer Literacy

32 Voice Recognition “ COPY ” Microphone 1010010101 analog to digital converter pattern matching template library 1010010100 input to computer system Computer Literacy 1010010101

33 VoiceControlSoftware Computer Literacy

34 VoiceDictationSoftware

35 Keyboard Mouse Touch Scanners Pen-based Voice COMPUTER + “others” Computer Literacy

36 Digital Cameras Magnetic Stripes & Smart CardsMagnetic Stripes & Smart Cards ATM’sATM’s POS’sPOS’s Light Pen Digitizer Tablet

37 This section is finished Computer Literacy


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