Digital + Analogue

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    Digital + Analogue - Presentation Transcript

    1. Digital+Analogue
    2.  
    3.  
    4.  
    5.  
    6. Digital
    7. Digital uses discrete values
    8. Digital uses discrete values Analogue
    9. Digital uses discrete values Analogue uses continuous spectrum of values
    10. digit Latin for finger
    11. Noise digital signal
    12. Noise digital signal signal + noise
    13. Noise digital signal signal + noise result
    14. Noise analogue signal
    15. Noise analogue signal signal + noise
    16. Noise analogue signal signal + noise result
    17. Data Loss Analogue Digital
    18. Data Loss Analogue Digital To sleep perchance to dream To sleep perchance to dream
    19. Data Loss Analogue Digital
    20. Digital Signals smoke signals morse code computer modem beacon fire
    21. Number Systems
    22. Decimal base 10 system using ten digits Number Systems
    23. Decimal base 10 system using ten digits Binary base 2 system using two digits Number Systems
    24. Electronic Signal
    25. on off Electronic Signal
    26. on 0 off 1 Electronic Signal
    27. Binary Numbers 0 1 10 11 100 101 110 111 1000 1001 1010 0 1 2 3 4 5 6 7 8 9 10
    28. Digital Data 0 or 1 = a ‘ bit ’ 8 bits = a ‘ byte ’ 1000 bytes = a ‘ kilobyte ’ 1000 kilobytes = a ‘ megabyte ’
    29. Digital Data 8 bits 8 7 6 5 4 3 2 1 0 0 0 0 0 1 0 1 can represent values from 0 to 255
    30. Digital Data 16 bits 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 can represent values from 0 to 65,535 0 1 0 0 0 1 0 0 1 0 1 0 0 1 1 0
    31. Digital Data 24 bits can represent values from 0 to 16,777,215
    32. Digital Data 32 bits can represent values from 0 to 4,294,967,295
    33. Bitmap Images Bit Depth the number of colours each pixel can represent
    34. Bitmap Images Bit Depth R G B
    35. Bitmap Images Bit Depth R G B 256 256 256
    36. Bitmap Images Bit Depth 256 256 256 x x
    37. Bitmap Images Bit Depth 256 256 256 x x = 16,777,216
    38. Bitmap Images Bit Depth 256 256 256 x x = 16,777,216 = 24 bit
    39. Bitmap Images Pixel Dimensions
    40. Bitmap Images Pixel Dimensions horizontal vertical
    41. Bitmap Images File Size
    42. Bitmap Images File Size Bit Depth x Pixel Dimensions
    43. Bitmap Images File Size Bit Depth x Pixel Dimensions 24 bit 640 x 480
    44. Bitmap Images File Size Bit Depth x Pixel Dimensions 16,777,216 307,200 x
    45. Bitmap Images File Size Bit Depth x Pixel Dimensions a very big number
    46. Bitmap Images File Formats bmp gif jpg png psd tif pct eps pdf
    47.  
    48.  

    + waterboyzoowaterboyzoo, 4 years ago

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