Method of program management for multiple computer system

In a multiple computer system, a computer sends a program annexed with a code representative of the characteristic (e.g., the content and length of the program, the cooperation with other programs, the content of input and output data) of the program to the transmission line. Another computer checks the program based on the code representative of the program characteristic, and receives the program if necessary or executable based on the check result. Each computer can set, as occasion arises or if necessary, codes representative of the characteristics of several programs executable by the computer, so that specific receiving stations are not needed to be identified beforehand. The received program is checked based on the characteristic code annexed thereto, and if proper, the program is stored or executed if necessary.