Function. A UPC code is a 12-digit number with the bar code comprised of 7-bit codes that represent each digit in the sequence.There are exactly 30 bars in the UPC code sequence, including the start and end bars.The UPC code is read by a digital scanner that allows it to interpret each of these bars and match it up with a database for speedy check out.here are exactly 30 bars in the UPC code sequence, including the start and end bars. The UPC code is read by a digital scanner that allows it to interpret each of these bars and match it up with a database for speedy check out.
The Sun is the primary source of energy for nearly all biological systems. Sunlight allows plants, algae and cyanobacteria to use photosynthesis to convert carbon dioxide and water into organic compounds like carbohydrates. This process is the fundamental source of organic material in the biosphere.
So, the sun gives off light because of the different types of gases in the core. These gases , when combined, create radiation. The sun gives off this radiation in rays, produâ¦cing light rays, that comes from our sun and other stars. -This all comes from a 8th grader. Additional answer The Sun is very very hot and hot objects, as you know by a red hot poker, emit light and heat.