Data processing system.

摘要

The memory area within an electronic token of the 'smart card' type comprising a processor (4), memory (7, 8, 9) and input/output means (5) is divided into an execute only region and a non-volatile read/write region. A method of loading an applications program is described in which the program is loaded into a portion of the read/write region by software methods and in which the application program may be altered if the use of the card alters.