The Kansas City standard (KCS), or Byte standard, is a data storage protocol for standard cassette tapes at 300 bits per second. It originated in a symposium sponsored by Byte magazine in November 1975 in Kansas City, Missouri to develop a standard for the storage of digital microcomputer data on inexpensive consumer quality cassettes. The first systems based on the standard appeared in 1976.
The SWTPC AC-30 Cassette Interface implements the Kansas City standard. In May 1976, it was sold for US$80 (equivalent to about $400 in 2023).
Interface Age magazine May 1977 issue, with a Kansas City standard flexi disc floppy ROM
Byte was a microcomputer magazine, influential in the late 1970s and throughout the 1980s because of its wide-ranging editorial coverage.
Vol 1. no. 4, December 1975
Byte leased an office for one of their West Coast Branch operations in this building in Costa Mesa, California (pictured in 2022).