The letters actually refer to the connector shell size and are really independing of the number of pins. For example, a DB shell could have fewer than 25 pins. Some have two or even three heavy pins (one for power, 2 for return) and some signal pins. The reason the the 9-pin is designated DE is because it was developed after A, B, C, and D, sizes.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments