J14478(JW型微电流显示器)专利权之一,就是构造如图1所示的LED显示屏,它对“→”、“←”;“-、+”;“+.-”等图像的输出,能按教材上的图示原理,跟随输入讯号,原地同步转向。因此,在义务制教材的物理教学中,具有现行常规仪器所未能实现的独特功能,而给教学带来不少方便。现根据初三物理教材内容简述如下。 One of the patents of J14478 (JW type micro current display) is to construct the LED display screen shown in Fig. 1, which outputs images such as “→”, “←”, “-, +” and “+.-”. , According to the teaching principle of the teaching materials, follow the input signal, synchronously turn in place. Therefore, in the physics teaching of compulsory teaching materials, it has unique functions that cannot be achieved by current conventional instruments, and brings a lot of convenience to teaching. According to the third grade physics textbooks, the contents are as follows.