This product is a PCI bus compatible board that extends the input / output function of the digital signal on a personal computer.It is equipped with 48 non -insulating TTL level input / output that operates equivalent to i8255 mode 0.Up to 48 points of the input signal can be used as interrupted input.Input / output switching can be performed in 8 -point units (4 points for some input / output) depending on the software.In addition, it has a digital filter function.A Windows/Linux driver is attached.- [Extended module] Bus specification PCI Express Size Short size Used connector 1x 1.27mm pitch 96-pin (male) 2x pin header 50-pin (male) [Digital input/output] number of input points - Output points - two -way score 48 points 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 (positive logic) Output circuit Non -insulated TTL level output (positive logic) Built -in power supply -