Digital Compact Cassette was created in 1992.
Compact Cassette was created in 1963.
Phillips was the inventor of the compact cassette tape (it's original name).
Similar only in the fact that both can be used to record audio. However, their underlying technology is totally different. A cassette records audio in an analog format while a CD records audio in a digital format.
A cassette was invented in 1962. There were other forms of magnetic tape mad before this but none of them compared to the compact cassette.
Yes, there are portable cassette players with digital displays. Check online for the biggest selection.
1963 Philips introduced the compact audio cassette medium for audio storage in Europe in 1963, and in the United States in 1964, under the trademark name Compact Cassette. Although there were other magnetic tape cartridge systems, the Compact Cassette became dominant as a result of Philips's decision in the face of pressure from Sony to license the format free. It went on to become a popular (and re-recordable) alternative to the 12 inch vinyl LP during the late 1970s. source: wikipedia article for Compact Cassette.
Cassette Tapes. :) and records
The compact disk, or CD, was developed by Sony and Philips in the 1980s as a digital optical disc used to store and play audio and data. It was created as a successor to the larger vinyl records and cassette tapes, offering improved sound quality and durability. Today, CDs are still used for music, software, and data storage, although they have largely been replaced by digital formats.
NT - cassette - was created in 1992.
Cassette Set was created in 1981.
Cassette Kids was created in 2007.
Try looking at this entry about the Philips compact cassette here: http://en.wikipedia.org/wiki/Compact_Cassette