Introduction - If you have any usage issues, please Google them yourself
PC port access 8 toggle switches K1-K8, PB port access 8 LED. The initial setting by the switch K1-K8 eight different values, when executing the program LED K1-K8 initially set by the value of lights and the right mobile (8255A operates at 0 mode), while the digital display. " 8255--- A " .