Early personal computers of the late 1970s and early 1980s, such as those from Apple, Atari and Commodore, do not use RGB as their main method to manage colors, but rather composite video. IBM introduced a 16-color scheme (one bit each for RGB and Intensity) with the Color Graphics Adapter (CGA) for its first IBM PC (1981), later improved with the Enhanced Graphics Adapter (EGA) in 1984. The first manufacturer of a truecolor graphic card for PCs (the TARGA) was Truevision in 1987, but was not until the arrival of the Video Graphics Array (VGA) in 1988 that RGB became popular, mainly due to the analog signals in the connection between the adapter and the monitor which allowed a very wide range of RGB colors.