A Low-Cost Audio Computer for Information Dissemination Among Illiterate People Groups

Abstract

Abstract-We present LIT, a low power, low cost audio processor for information dissemination to and among illiterate people in developing regions. The 265K gate, 8 million transistor, 23mm 2 , ARM Cortex M0 processor uses a novel memory hierarchy consisting of an on chip 128kB true LRU cache and off-chip flash. It is designed for efficient operation on Carbon Zinc batteries and has a high-level of integration to reduce cost.