Management system of monitor wafers

A management system for managing information of monitor wafers stored in a storage center, each of the monitor wafers comprising a wafer number, the information of each of the monitor wafers being stored in a database, the management system comprising:

• an operation rule module for determining the next manufacturing process for each of the monitor wafers according to its wafer number and wafer condition;
• an information update module for updating the information of the monitor wafers in the database according to the results made by the operation rule module;
• an inventory module for computing an inventory quantity of the monitor wafers according to the wafer numbers and the wafer conditions of the monitor wafers;
• a warning module for checking whether the inventory quantity of the monitor wafers is less than the quantity of the safety stock or not and sending a warning message when the inventory quantity of the monitor wafers is less than the quantity of the safety stock;
• and
• a display module for showing the wafer conditions and the inventory quantity of the monitor wafers.