Using simple matrix driving, low power-consumption, black and white display, and full color display can be obtained.

它的可移动臂能呈现黑色、白色(或彩色)带，可通过加电压脉冲来变色。

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The "Hidden" card features a keypad and black-and-white display for six of the digits in the card's unique number.

另外一种“隐形卡”的特色是有一个小键盘，以及显示卡号缺损数字的六位黑白显示器。

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Most of them have a monochromatic screen to display text and black-and-white pictures, and none can handle video.

大多是单色屏幕，仅能显示文本与黑白图片，且全都无法处理视频。

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Better yet, the always-on, ultra low-power, black and white display becomes a canvas for notifications, sports scores, maps, lists and notes, all just a glance away.

ENGADGET: Popslate launches iPhone 5 case with four-inch E Ink screen (video)

Last May, Plastic Logic demonstrated a paper-like flexible screen capable of playing video in colour, which is achieved by placing a filter on top of the original black-and-white display.

BBC: Bend me, shape me: Flexible phones 'out by 2013'

The iPad was clearly a more versatile device: it would provide color and full audio and video, while the Kindle could display only black-and-white text.

NEWYORKER: Publish or Perish