This product is an interface board based on the PCI Express bus that performs the input / output of the non -insulated TTL level digital signal.You can input up to 16 points and output up to 16 points with one piece.All input signals can be used as interrupted input.By using the attached driver library [API-PAC (W32)], you can create Windows application software in various programming languages that support Win32api functions such as Visual Basic and Visual C ++.- [Extended module] Bus specification PCI Express Size Low Profile Used connector 1X miniature ribbon 50-pin [Digital input/output] number of input points 16 points Output points 16 points two -way score - Response speed (input) 200nsec (max.) Response speed (output) 200nsec (max.) Operate voltage (input) 5VDC-TTL Operate voltage (output) 5VDC-TTL input circuit Non -insulated TTL level input (negative portion) Output circuit Non -insulated TTL Open Collector Output (negative theory) Built -in power supply -