Production order determination system and production order determination method

A production order determination system for determining a production order when circuit boards of multiple board types are produced for each board type in an order in a board production facility configured to mount components of multiple types on boards to produce circuit boards, the system comprising:

• a first circuit board selection section configured to select a circuit board of a board type with the shortest production time from among the circuit boards of the multiple board types;
• and
• a first circuit board determination section configured to determine a circuit board of a board type to be produced next to the circuit board of the board type selected by the first circuit board selection section,
• wherein the first circuit board determination section is configured to
• calculate a degree of commonality between component types of multiple components used when the circuit board of the board type selected by the first circuit board selection section is produced and component types of multiple components used when a circuit board of a board type not selected by the first circuit board selection section is produced, for each board type for the circuit board of the board type not selected by the first circuit board selection section, and
• determine a circuit board of a board type having the highest calculated degree of commonality in components as the circuit board of the board type to be produced next to the circuit board of the board type selected by the first circuit board selection section.