But the Mark 3 bomb had a number of inherent shortcomings. It was a handmade, complicated, delicate thing with a brief shelf life. The electrical system was powered by a car battery, which had to be charged for three days before being put into the bomb. The battery could be recharged twice inside the Mark 3, but had to be replaced within a week—and to change the battery, you had to take apart the whole weapon.
Compare this to the Macintosh Quadra 950, where to add memory you had to remove the entire motherboard, and disconnect about a dozen cables in the process -- most of which would happily plug in elsewhere on the motherboard.
