From surprisingly good $300 Chromebooks to excellent $650 Windows laptops, these are the best budget laptops we’ve tested.
I mounted the copper disk and TCXO up on my mill and started cutting. I probably could have made slightly faster progress if I swapped the 250 μm endmill out with a bigger one, say a 1.5 mm, but the sample was small enough I didn’t want to bother messing around with collets and wrenches to change tools. The machining only took a couple of minutes, making very slow gentle passes a few tens of μm deep before the edge looked to be about ready to punch through.
，更多细节参见新收录的资料
Three boards this year (ROCK 4D, ArmSoM CM5, DShanPi A1), all performing within a few percent of each other. The software story is the same as it’s been for Rockchip, and that’s promising hardware that needs the kernel and driver support to catch up. That said, Collabora’s recent progress on upstream video decoder support for the RK3576 and RK3588 is encouraging, and it only builds on the great work they’ve already done in the area.。新收录的资料是该领域的重要参考
Author(s): Guowang Yu, Xiaoning Guan, Yanan Zhang, Yaqi Zhao, Yanchao Zhang, Fan Zhang, Feng Zhou, Pengfei Lu。关于这个话题，新收录的资料提供了深入分析