Key layout presetting system in an electronic cash register

Abstract From the Canadian patent

A preset system is provided in an electronic cash register for modifying a function key layout at operator's choice. A key determination table is included in a read only memory for defining a key function when a key is actuated. A key function exchange table is included in a random access memory, which stores a modified key assignment table. The preset system is associated with the key function exchange table to preset a desired key assignment. When a key is actuated in the normal registration mode a CPU determines, the key function in accordance with the information stored in the key determination table and the key function exchange table.