Error Control

This week in class we sat down in groups of four and five with pile of cards and laid out in a 7 by 7 square with black and white cards we then had to add and eighth line to both sides and make it have an even amount of black and white cards in each row, then one person from the group turned around and the others changed one card and the person who turned around had to figure out what card was flipped. Parity cards are black and white cards, we know that computers use 0's and 1's so we just have to change the cards if they are uneven, the black cards are 0's and the white cards are 1's.