(Capacitance Electronic Disc) An earlier videodisc technology from RCA that was released in 1981 and abandoned five years later. Like phonograph records, the analog disc contained grooves that a stylus rode over. However, the stylus used a much smaller electrode that sensed the variations. CED-based RCA SelectaVision VideoDiscs had approximately 240 lines of resolution, similar to VHS tapes, which became very popular in the 1980s. See LaserDisc.