New LED-driven I/O type microcontroller


The HT48R54A is a newly developed 8-bit high-current LED-driven I/O-type microcontroller from HOLTEK Semiconductor with up to 40 input/output pins. Port D and Port E can drive 40mA at a working voltage of 5V. Can directly push up to 256 LEDs.
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Eye protection may not be eye-protected


Do you know the myopia rate of primary and secondary school students? In recent years, the ageing of myopia has become a common fact. The increasing number of myopia among primary and secondary school students has ruined many parents. Therefore, m.......