Multiple choice Why were errors in coding called bugs? A moth was found in a computer in the 1940s. Ant took over a computer. A group of cockroaches invaded a laptop. Spiders caused a short circuit in the motherboard of a desktop computer. Reveal answer Fill a bubble to check yourself A Correct answer Explanation The term 'bug' became popular after Grace Hopper and her team found a moth trapped in a relay of the Harvard Mark II computer in 1947, causing it to malfunction.