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5 Written questions

5 Matching questions

  1. image file size
  2. range
  3. 32 bit integer
  4. bit depth
  5. 24 bit color
  1. a 4 bytes with binary place values 2^0 to 2^31, maximum value (2^32)-1
  2. b limit for smallest value (near zero) and largest value on number line depends on number of bits for exponent (moves the point)
  3. c bitmap file size depends on the resolution and the bit depth for pixel colour; (length in pixels) x (breadth in pixels) x (bit depth)
  4. d Digital color model that uses eight bits each for the three additive colors (red, green, blue.) It can reproduce 256 shades of each primary color. Total 16 million shades. True colour.
  5. e number of bits used to code a colour, aka colour depth

5 Multiple choice questions

  1. graphic file size made smaller by using special algorithms to reduce amount of data needed for bitmap
  2. no resolution information is lost
  3. each character needs more bits (twice)
  4. represents negative and positive numbers in the range -128 to +127
  5. image can scale to any size without increasing file size, shapes are fully editable by amending numbers that represent attributes eg change layer

5 True/False questions

  1. 8 bit color64 thousand colours

          

  2. bit map disadvantagephotos, images that can't easily be represented as shapes

          

  3. bit mapbinary values corresponding to grid of pixels including colour code

          

  4. ASCII7 bit code representing (only) latin type alphabets and language symbols

          

  5. vector disadvantagelimited types of image possible, drawings only

          

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