FLUID (Fast Light User Interface Designer) is a graphical editor used to produce FLTK source code.

FLUID(快速轻巧的用户界面设计器(Fast Light User Interface Designer, FLUID))是用来产生fltk源代码的图形编辑器。

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The value of OLEDs, beyond their brightness, is that the electricity which powers and controls them is turned directly into the light the user views.

有机发光两极管除了它们的亮度以外，其价值还在于驱动及控制它们的电流是直接转换成用户所看到的光。

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A ring of LEDs projects infrared light into the space immediately in front of the user so a camera in the device can interpret gestures.

一束由发光二极管发射出的红外线光立刻进入到使用者眼前的空间，这样一个小型摄像机装置，可分析人们的手势轨迹。

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We are constantly rethinking and upgrading the MIX in the light of user feedback.

FORBES: Gary Hamel On Innovating Innovation

Most simply, the LED light lets the user know when the device has been successfully paired with iPad.

ENGADGET: Ten One ships $80 Pogo Connect, a pressure-sensitive Bluetooth 4.0 stylus for iPad

It's sweet and simple: the camera captures the reflection of light on the user's eye, and image processing technology then calculates the user's viewing angle to allow for hands-free navigation on-screen.

ENGADGET: Fujitsu eye-tracking tech uses built-in motion sensor, infrared LED for hands-free computing (video)