The DAS 9100 can be configured as a logic analyzer, as a pattern generator, or as a combination of the two. With appropriate modules (sold separately). Programming is made simple and menus/functions are accessed logically. The DAS 9100 fulfills the requirements needed for the design, manufacture, and service of digital products. Modular system architecture allows various instrument configurations, each tailored to meet specific testing requirements. This mainframe consists of a display monitor (9" raster scan CRT with 24, 80-character lines of display), 91A32firmware (Version1.1), a cassette drive, a functionally encoded keyboard , power supply, and controller module.