9. A printing apparatus connectible to a different keyboard for a different country, comprising: a processor of stored-program type with a data bus and an address bus for controlling the printing operation sequence of the apparatus; a keyboard for entering character codes; buffer means for storing a character code entered by said keyboard; a character generator connected to the output of said buffer means to be addressed by the character code stored in said buffer means for generating one of a group of character patterns common to countries, which corresponds to the addressed one, at the output thereof, wherein said processor controls said buffer means to address said character generator by the character code stored in said buffer means for generating one of said group of character patterns; identification means for generating an identification signal representative of the country which corresponds to said keyboard; a processor-accessible memory connected to the address bus of said processor to be addressed by an address signal issued from said processor and producing data at the addressed location on the data bus, said memory storing character patterns other than the group of character patterns; and interrupt means for generating an interrupt signal when the character code stored in said buffer means is determined to correspond to one of said other character patterns by referring to the identification signal, wherein said processor in response to the interrupt signal halts said buffer means to generate one of said group of character patterns and instead receives the character code stored in said buffer means to convert the received character code into an address signal and accesses said memory by the converted address signal through the address bus for generating one of the other character patterns on the data bus.
9. A printing apparatus connectible to a different keyboard for a different country, comprising: a processor of stored-program type with a data bus and an address bus for controlling the printing operation sequence of the apparatus; a keyboard for entering character codes; buffer means for storing a character code entered by said keyboard; a character generator connected to the output of said buffer means to be addressed by the character code stored in said buffer means for generating one of a group of character patterns common to countries, which corresponds to the addressed one, at the output thereof, wherein said processor controls said buffer means to address said character generator by the character code stored in said buffer means for generating one of said group of character patterns; identification means for generating an identification signal representative of the country which corresponds to said keyboard; a processor-accessible memory connected to the address bus of said processor to be addressed by an address signal issued from said processor and producing data at the addressed location on the data bus, said memory storing character patterns other than the group of character patterns; and interrupt means for generating an interrupt signal when the character code stored in said buffer means is determined to correspond to one of said other character patterns by referring to the identification signal, wherein said processor in response to the interrupt signal halts said buffer means to generate one of said group of character patterns and instead receives the character code stored in said buffer means to convert the received character code into an address signal and accesses said memory by the converted address signal through the address bus for generating one of the other character patterns on the data bus. 10. A printing apparatus according to claim 9, wherein said memory stores character patterns specific to each country.