Patent ID: 6865434

Claim:
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.