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摘要

PURPOSE:To attain a free input from both personal computers at location apart from each other with respect to the operation in a general-purpose software by deciding the priority of an input signal with the general-purpose software and inputting an input signal to the general-purpose software based on the priority. CONSTITUTION:Let an input from a keyboard 7 be B and an input sent from a remote location to a control personal computer (PNU) 5 be A, then a general- purpose software 10 is remodeled to remodel a key entry program 9b. The remodeled program 9b discriminates which of the inputs A, B is to be written in a memory 9. For example, when the key entry of a keyboard 11 is operated earlier at a remote location than that this side, the input A is inputted to a serial interface 12a in the connection of A-C while the input A is regarded to receive priority C at the personal computer 5. Thus, the signal A is inputted into a key input buffer. Since the similar operation is implemented simultaneously even at a remote location side, the output screen of the general-purpose software 10 is subjected to write and correction.