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Digital + Analogue
- 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
- 12. Noise digital signal signal + noise
- 13. Noise digital signal signal + noise result
- 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
- 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