A user-microprogrammable computer has been developed for use as a building block in general-purpose and dedicated computer systems. The architecture is designed to be easily microprogrammed and features a 32-bit, vertically oriented microinstruction. The processor has a 135-nanosecond cycle time, either 16- or 20-bit macro data paths, and 1024 hardware registers. A significant fraction of the processor bandwidth may be budgeted for I/O processing to allow the substitution of microcode for expensive peripheral controllers. Furthermore, the micromachine is well suited to the emulation of other computer architectures in that it provides a large writable microcode memory and a minimum of special processor data paths. The design goals and strategies which determined the machine architecture are discussed, as well as an overview of the architecture and hardware organization. Finally, we report a number of specific applications developed to date.

Digital reading applications give readers the ability to customize fonts, sizes, and spacings, all of which have been shown to improve the reading experience for readers from different demographics. However, tweaking these text features can be challenging, especially given their interactions on the final look and feel of the text. Our solution is to offer readers preset combinations of font, character, word and line spacing, which we bundle together into reading themes. To arrive at a recommended set of reading themes, we present our THERIF pipeline, which combines crowdsourced text adjustments, ML-driven clustering of text formats, and design sessions. We show that after four iterations of our pipeline, we converge on a set of three COR themes (Compact, Open, and Relaxed) that meet diverse readers' preferences, when evaluating the reading speeds, comprehension scores, and preferences of hundreds of readers with and without dyslexia, using crowdsourced experiments.