- MJK is a company located in
Silicon Valley that sells timesharing on HP minicomputers. Their
major business is providing access to current and historical data for
the commodities market. John Walker used this system in his commodity
trading days, and also used it to implement a teleconferencing system
for Marinchip dealers and, later, Autodesk people. Since the system
was on Tymnet, overseas participants could access it economically.