Teletext arrangement has programmable external program memory with write enable input coupled to processing unit so memory content can be changed depending on signal applied to input

摘要

The teletext arrangement has a processing unit (10) and at least one external memory (20) connected to the processing unit for storing a program for implementation by the processing unit. The external memory has a write enable input (23) coupled to the processing unit so that the memory content of the external memory can be changed depending on the signal applied to this input.