Background: Computer usage has rapidly grown. This is because it helps to resolve problems, i.e., encountered in daily life by individuals. Various monitor screens that have been developed affect the userchr('39')s eyes. Screen size is one of the relevant impacts. Thus, this study compared the immediate effects of two computer screen sizes on visual fatigue in Video Display Terminal (VDT) users...

The conditions of use are analyzed and the main requirements for mobile systems dynamic display information during tests demonstrations agricultural machinery in field given. A system design is proposed that uses panels various types based on superbright LEDs. process controller has been developed a display, capable connecting to measuring systems, stationary computers.