You can find ergonomic keyboards with and without number pads. Not having those number keys on the right hand side lets you keep your mouse closer in, minimizing overall reach. But if you work with numbers a lot, you’ll likely want that pad included. Some programmable boards allow for the use of layers, which temporarily repurpose keys and can provide you with a ten-key option through clever remapping of letter keys.
We even tried building hierarchies with 2-3 levels, but the number of shortcuts grew too fast for higher levels if we generated a full graph inside each cluster.，详情可参考WPS下载最新地址
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