一个不错的东东

PIC16(L)F1938/9 数据手册 带LCD 驱动器、 采用nanoWatt XLP 技术的 28/40/44 引脚8 位CMOS 闪存单片机

Magazine detailed Skippy s professional life in an August 1938 profile of the East kennels, titled "A Dog s Life in Hollywood": Movie actresses stroke Skippy lovingly. They coo at him and murmur endearing terms in his ears. He takes it all in his s

A strain gauge (also strain gage) is a device used to measure the strain of an object. Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the most common type of strain gauge consists of an insulating flexible backing which supports a metallic

霍尔传感器是根据霍尔效应制作的一种磁场传感器。霍尔效应是磁电效应的一种，这一现象是霍尔(A.H.Hall，1855-1938)于1879年在研究金属的导电机构时发现的。后来发现半导体、导电流体等也有这种效应，而半导体的霍尔效应比金属强得多，利用这现象制成的各种霍尔元件，广泛地应用于工业自动化技术、检测技术及信息处理等方面。霍尔效应是研究半导体材料性能的基本方法。通过霍尔效应实验测定的霍尔系数，能够判断半导体材料的导电类型、载流子浓度及载流子迁移率等重要参数。(The Holzer sensor