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Фото: Willy Kurniawan / Reuters
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.，推荐阅读电影获取更多信息
Let's bring in some experts. They're going to tell us we're comparing apples with oranges here when looking at the Neo and Ultra. “They serve very different purposes, very different audiences,” says Jitesh Ubrani, research manager at IDC. “You're essentially talking about a health device versus a general-purpose computer, right? And so the prices shouldn't be comparable, because they do very different things.”
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