The spinners are weighted knobs that you can spin freely in either direction. Inside, a rotary encoder produces two square wave signals (A and B) that are 90 degrees out of phase. By counting the edges and checking which signal leads, you can determine both the speed and direction of rotation. We sample these at 1kHz in firmware and report the accumulated counts as an axis value in the HID reports.
巨头在此押注未来十年的船票，创业者在此寻求第一桶金的现实回报，供应链在此等待新一轮的订单潮……
，这一点在im钱包官方下载中也有详细论述
В России спрогнозировали стабильное изменение цен на топливо14:55
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