Please enable JavaScript.

Coggle requires JavaScript to display documents.

2.6 Data Representation (Binary (Binary shifts (Left shift (for every…

- - - - This compression loses data. Fiile cannot be turned back into original
      - Worse quality than the original
      - Cannot be used on text as these files need to retain all information
      - Greatly reduced file size
      - Commonly used files
      - Lossy files take up less bandwith so can be downloaded quicker.
  - - - Only small reduction in file size. Lossless song fille has a file size around 30MB whilst the same lossy will have a file size of 5MB
      - No reduction in quality
      - Can be decompressed back into original
      - Can be used with text and software files
- - - - for every place shifted, the number is doubled
      - Multipiciation
    - - For every place shifted, the number is halved
      - Division
  - - - This is when a nnumber has too many bits.
  - - - Convert these nibbles into HEX
        
        put the two values together and you are done
      - 10111001 to HEX
        
        1011 is B and 1001 is 9
        
        Answer is B9
  - - - convert HEX to nibbles
        
        Convert nibbles into HEX
      - 8C to Binary
        
        8 is 1000 and C is 1100
        
        8C is 10001100
- - - - 4096,256,16,1
      - Using the order above, the HEX number 87 would be 135 in denary
        
        As it is only 2 digits, you would multiply the first digit "8", by 16. Then the next digit, "7", which correlates with "1" in the HEX order above. So (168)+(17) = 135
  - - - Using this method, Denary number "106" would be "6A" in HEX.
      - The first step is to divide 106/16. Ths will give 6 remainder 10. KEEP THE REMAINDER. So the first HEX digit is 6. Then divide the remainder by 1 which will give the second HEX digit "A" as 10 is A in HEX. This gives the answer "6A"