An IC memory card system has a host for processing data, and an IC memory card removably connected to the host and incorporating a data recording medium implemented by an electrically erasable programmable semiconductor memory. The host comprises a system controller for sending to the memory card an...http://www.google.com.au/patents/US5361228?utm_source=gb-gplus-sharePatent US5361228 - IC memory card system having a common data and address bus