格式:pdf
大小:351KB
頁數: 1頁
黑夜總是帶給人們一種莫名的恐懼感,這主要是由于在漆黑的環境下,人們的內心受到了環境的影響做出的回應。但人們的智慧總會打破這樣的現象.燈的發明將原本漆黑的夜晚點亮。隨著時代的變遷,各種便攜式的照明系統出現在人們的視線中。
格式:pdf
大小:1.9MB
頁數: 44頁
USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector Date: 10/20/2000 Reason for ECN: The USB 2.0 specified device-side connector – the B connector – is too large for use with a new generation of handheld and mobile devices, e.g., cell phones which would benefit from connectivity to the PC. This ECN incorporates a specification of a device-side mini connector (hereafter r