Multi-item data input apparatus

摘要

A multi-item data input apparatus for manual generation of data to designate selected ones of a plurality of items, the items being visibly displayed on a flat sheet, comprising a plate having apertures therein in positions corresponding to those of the items on the sheet, a transparent key mounted in each of the apertures and movable therein within a limited range, a contact spring actuatable by each key, and a matrix of conductor elements arranged in rows and columns in relation to the contact springs such that contact between two intersecting conductors is established by actuation of any of the keys, thereby generating data designating the item which is visible through that key.