Prototype: Build a functional prototype based on your assumptions about how to support iterative project planning.

原型：基于你关于如何支持迭代项目计划的设想构建一个功能原型。

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As eardrum vibrations naturally create a usable voltage from brain signals, the prototype can build enough charge in a capacitor to drive a very low-power wireless transmitter that relays the electrochemical properties of the ear and potentially diagnoses balance or hearing problems.

ENGADGET: MIT ear-powered wireless sensor sustains its charge through sound

Dozens of companies are attempting to build prototype vehicles that would take tourists to the edge of space.

ECONOMIST: Space tourism

We were impressed with the prototype's build quality (it's CNC machined), especially the design of the sliding mechanism used to capture the iPad.

ENGADGET: Audojo kick-starts iPad gaming case, we go hands-on (video)