Error Control.

We got in groups to work out error control. We got 8 rows of black and white cards and we had to make even numbers in the lines. Then we had a go online and took a screenshot of it as our proof/work. A parity card is basically what the computer's black and white runs on, The black card runs the 0 and the white runs the 1. Because we know that computers run off of one's and zero's it helps us with the errors that come along in the computer.