Production management system of electronic device components and production management method of electronic device components

A production management method of a production management system for electronic device components produced through a plurality of production processes, wherein:

• the production processes respectively include production devices each of which produces the electronic device components and management devices each of which manages the production device;
• the management devices store production condition information indicating conditions for producing the electronic device components in the production devices;
• and
• the production management system includes a storage device which stores a hash value calculated from the production condition information as a management hash value for each of the production processes, when the electronic device components are produced in each of the production processes in accordance with the production condition information,
• the production management method comprising:
• causing a management device of a pre-process to add a hash value of the production condition information received from a preceding process and a hash value calculated from the production condition information of the pre-process to calculate a first hash value and transmit the production condition information of the pre-process and the first hash value to a management device of a current process;
• and
• causing a management device of a current process to calculate a second hash value from production condition information received from the pre-process, calculate a third hash value obtained by subtracting the second hash value from the first hash value, compare the calculated third hash value and a management hash value of a process precedent to the pre-process, which is stored in the storage device, and store the second hash value in the storage device when the third hash value coincides with the management hash value.