For more on how to train to become an electrician, see this resource from the ETA.
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从研发投入规模区间分布情况看，中国已经形成一个由头部企业主导、庞大腰部力量支撑、众多小微企业补充的多层次协作的创新生态。
This is kind of the big question when writing "a game from scratch", but there are a lot of great libraries to help you get stuff onto the screen - from SDL, to GLFW, to Love2D, to Raylib, etc.