Sony - 1982 saw the launch of Sony's Betacam videotape family and the collaborative Compact Disc format. In 1983 Sony introduced 90mm micro floppy diskettes (better known as 3.5-inch floppy disks), which it had developed at a time when there were 4' floppy disks and a lot of variations from different companies to replace the then on-going 5.25' floppy disks. Sony had great success and the format became dominant; 3.5' floppy disks gradually became obsolete as they were replaced by more current media formats. In 1983 Sony launched the MSX a computer for the home and introduced the world with their counterpart Philips the Compact Disc or CD. In 1984 Sony launched the Discman series which extended their Walkman brand to portable CD products. In 1985 Sony launched their Handycam products and the Video8 format. Video8 became popular in the consumer camcorder market. In 1987 Sony launched DAT or Digital Audio Tape as a new audio tape standard alternative to CD.