Theatrical seat reservation office system - has user terminals communicating with computer data memory and ticket printing appts. and includes back-up secondary hard disc storage

摘要

The central control terminal is equipped with a flexible disc peripheral device and connected to two point-of-sale terminals. All three terminals have their own ticket printer and are linked through a switch to primary and secondary Winchester hard disc stores. - All data introduced at any terminal is recorded on the flexible disc and at the prim. hard disc store. At the close of bookings on each day the contents of the flexible disc are transferred to the sec. hard disc store. The switching involves a multiplicity of multipolar three-directional cards with three D-type connectors permitting up to 37 channels to be used. It is adjusted so that both main and standby hard disc stores contain the same data for security.(0/5)