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.
Екатерина Щербакова (ночной линейный редактор)
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The venture giant’s fifth foray into digital assets comes as the crypto market is sputtering, despite a recent uptick. Bitcoin has dipped by almost half since it notched an all-time high in October, and publicly traded crypto companies have seen their stocks plummet. Still, the industry is enjoying its most favorable regulatory environment in Washington, D.C., in its 17-year history.
04:21, 5 марта 2026Наука и техника