sentences:  These mainframe-based systems typically include a self-contained PC to simplify test setup, data analysis, graphing and printing, and on-board results storage.Users of these types of systems include semiconductor researchers, device modeling engineers, reliability engineers, die sort engineers, and process development engineers.In addition to mainframe-based systems, other curve tracer solutions are available that allow system builders to combine one or more discrete Source-Measure Units (SMUs) with a separate PC controller running curve tracer software.