One of the pins is programmed to produce a constant 1000 KHz square wave using PIO. The main program then turns the PIO on and off at the intended frequency. e.g. to emit an A4 pitch (440 Hz), it turns the 1000 KHz square wave on and off 440 times a second. To the radio receiver, this means a 440 Hz square wave audio. Using this technique, it emits the well-known Shave and A Haircut melody on a loop.
对手的模型可能在一夜之间通过开源追平，其精心打磨的硬件体验、供应链成本和品牌认知，却无法被轻易复制。这迫使所有志在长远的玩家，都必须躬身入局，参与这场“重资产”竞赛。
，更多细节参见体育直播
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伊朗官媒報導，南部米納布（Minab）一所女子學校週六遭三枚飛彈擊中，造成至少153人死亡。