Exam 12: Symbology

arrow
  • Select Tags
search iconSearch Question
  • Select Tags

A digital watermark shifts individual text characters from the home position.The shift can be zero, one unit to the left or right, or one unit up or down.If 600,000,000 different watermarks are desired, the number of characters required is _______.

Free
(Essay)
4.8/5
(82)
Correct Answer:
Verified

log⁡56×108=(.78+8)/log⁡105=12.6→13\log _ { 5 } 6 \times 10 ^ { 8 } = ( .78 + 8 ) / \log _ { 10 } 5 = 12.6 \rightarrow 13

In the UPC symbol encoding numbers 7955229651079552296510 has a CSD value equal to ___.

Free
(Essay)
4.7/5
(91)
Correct Answer:
Verified

 CSD =[210−3∑ (odd-indexed digits )−∑ (even-indexed digits )] mod (10)=[210−\text { CSD } \left. \left. = \left[ 210 - 3 \sum \text { (odd-indexed digits } \right) - \sum \text { (even-indexed digits } \right) \right] _ { \bmod ( 10 ) } = [ 210 - 3(7+5+2+9+5+0)−(9+5+2+6+1)] mod (10)=[210−3(28)−23)] mod (10)=[103] mod (10)=3\left. 3 ( 7 + 5 + 2 + 9 + 5 + 0 ) - ( 9 + 5 + 2 + 6 + 1 ) ] _ { \bmod ( 10 ) } = [ 210 - 3 ( 28 ) - 23 ) \right] _ { \bmod ( 10 ) } = [ 103 ] _ { \bmod ( 10 ) } = 3

The erroneous reading from the UPC symbol is given by 07e31000042107 \mathrm { e } 310000421 , where e is the erroneous digit value.The value of e is _____.

Free
(Essay)
4.8/5
(88)
Correct Answer:
Verified

 CSD formula must produce 1. CSD =[210−3(0+e+1+0+0+2)−(7+3+0+0+4)] mod (10)=[210−\text { CSD formula must produce 1. CSD } = [ 210 - 3 ( 0 + e + 1 + 0 + 0 + 2 ) - ( 7 + 3 + 0 + 0 + 4 ) ] _ { \bmod ( 10 ) } = [ 210 - 3(e+3)−14)] mod (10)=[210−23−3e] mod (10)=[187−3e] mod (10)=1→e=23 ( \mathrm { e } + 3 ) - 14 ) ] _ { \bmod ( 10 ) } = [ 210 - 23 - 3 \mathrm { e } ] _ { \bmod ( 10 ) } = [ 187 - 3 \mathrm { e } ] _ { \bmod ( 10 ) } = 1 \rightarrow \mathrm { e } = 2

The ZIP code of Marietta, GA is 30066.What is the value of the check sum digit CSD in the USPS bar code?

(Essay)
4.7/5
(92)

The detected ZIP code is 0e5153.What is the value of the error e?

(Essay)
4.9/5
(65)
close modal

Filters

  • Essay(0)
  • Multiple Choice(0)
  • Short Answer(0)
  • True False(0)
  • Matching(0)