Before revision: Due to their ability to be coiled, the wire-based systems could be built as "long " as neededand tended to hold considerably more data per unit; 1 kbit units were typical on a board only 1 foot square ().
After revision: Due to their ability to be coiled, the wire-based systems could be as long as needed, so tended to hold considerably more data per unit; 1 kbit units were typical on a board only 1 square foot ().