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Years ago, people figured out Raspberry Pi’s can accidentally double as FM radio transmitters without a need for any radio front-end (if we don’t count a single jumper wire working as an antenna). They achieved this by tying a GPIO pin to a software-controlled clock around 100 MHz to modulate audio. This created a low-powered FM radio transmitter. Due to the pin producing a square wave instead of a neat sine wave, it also emitted weaker harmonics at 300MHz, 500MHz, etc., but any basic FM radio could pick up the audio. I wondered if a similar feat could be achieved by much less powerful Raspberry Pi Pico microcontrollers.，推荐阅读下载安装汽水音乐获取更多信息
Apple finally announced its long-rumored budget MacBook today, and it's called the MacBook Neo. Its starts at just $599, or $500 less than the latest 13-inch MacBook Air, and preorders are now open. Education buyers save $100 by ordering it directly through the Apple Store.，更多细节参见heLLoword翻译官方下载
Россиянка Анна, проживающая в Абу-Даби (ОАЭ) с семьей, описала обстановку в городе словами «многие прячутся в ванной при звуке воздушной тревоги». Об этом она рассказала в беседе с РИА Новости.