To develop the computer software for supporting real time statistical process control system that applicable to production floor activities which focusing on measurement data of controlled parameters and also includes defect data from visual inspection area. This software was developed by using Microsoft Visual Basic, Version 4.0, Professional Edition, the software was named "SPC_Engine" that runs under Windows95 operating system. In addition to this software, it can be performed as following items below. 1. Data collection will be database system that can be created at run time. 2. Supporting data entry either via keyboard or RS-232 interface 3. Computing statistical data such as Min, Max, Mean, Range, Standard deviation and also Process Capability index (Cp and Cpk). 4. Creating variety of control charts and analyzing process deviation. 5. Creating and analyzing the Histogram and Pareto diagram. 6. Exporting data to Excel application by Dynamic Data Exchange (DDE) technique. Implementation of this real time statistical process control system in production floor could be effective for time saving and data integrity. Furthermore, it also definitely helps to track data and monitor real time process status as well.