Tarbell Cassette Interface

The Tarbell Cassette Interface is an expansion card for use with the Altair 8800 early personal computer, or other systems using the Altair's S-100 bus. It was designed by Don Tarbell and sold by Tarbell Electronics as early as 1976. At the time, it was considered to be fast, reliable, and popular. While supporting the 1975 Kansas City (Byte/Lancaster) standard, it also introduced a much faster Tarbell standard which became a "de facto" standard for compact cassette data storage.
Tarbell also sold other products, including TARBELL CASSETTE BASIC in 1978 and a Shugart Associates-compatible dual disk drive subsystem. The latter includes a Tarbell floppy disk interface, said to plug into any S-100 bus computer, introduced in 1979.