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

作者：Foo ZhiYoong^*; Devescery David; Ghaed Mohammad Hassan; Lee Inhee; Madhavan Abishek; Park Youn Sung; Rao Aswin S; Renner Zach; Roberts Nathan E; Schulman Aaron D; Vinay Vikas S; Wieckowski Michael; Yoon Dongmin; Schmidt Cliff; Schmid Thomas; Dutta Prabal; Chen Peter M; Blaauw David

来源：IEEE Transactions on Circuits and Systems I-Regular Papers, 2013, 60(8): 2039-2050.

DOI：10.1109/TCSI.2013.2264693

We present Literacy in Technology (LIT), a low power, low cost audio processor for information dissemination among illiterate people groups in developing regions. The 265 K gate, 8 million transistor, 23 mm(2), ARM Cortex M0 processor uses a novel memory hierarchy consisting of an on chip 128 kB true LRU cache and off-chip NAND Flash. LIT reduces initial acquisition cost through a high-level of integration that results in a low board-level component count. In addition, it also reduces recurring cost through design decisions that lower energy consumption. LIT's multiple power operational modes and power management schemes are specifically designed for efficient operation on Carbon Zinc batteries. These are commonly found in developing regions and allow LIT to be priced at a point that is viable for illiterate people groups in developing regions.

• 出版日期2013-8