1995年后美国生产率的爆炸性增长是由半导产业的进步引发的，这导致了计算机资源价格的急剧下跌。
The burst of strong growth in American productivity after 1995 was spurred by advances in the semiconductor industry, which led to sharp falls in the price of computing power.
本发明的目的针对现有导盲装置存在的价格昂贵、使用不便、信 息有限等问题，提供一种穿戴式触觉导盲装置。
The invention aims to solve the problems of expensive price, inconvenient use, limited information and the like of the prior guide device, and provides a wearing type touch guide device.
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