Like, display a hex digit on a 7-segment display for example.
Back in the day: grab a 7-segment decoder IC with 4 bits in, 7+1 drive lines out, done. Cheap, common, easy.
Today, if you're being normal: grab any old Cortex M0 micro and just bit-bang the display module directly. Maybe through a port expander or, if you're really fancy, a 7-segment driver IC that speaks I2C and runs like a dozen digits at once, with dot support and like 4 bonus GPIOs on the side because the package had free pins.
Dave Anderson /
npub1mt…xwant
2024-04-22 06:27:39
in reply to nevent1q…0wa0
Author Public Key
npub1mtg38agwglttl7melxnfqphlm95uymnrdedw62h9j7cyquynza0szxwantPublished at
2024-04-22 06:27:39Event JSON
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"content": "Like, display a hex digit on a 7-segment display for example.\n\nBack in the day: grab a 7-segment decoder IC with 4 bits in, 7+1 drive lines out, done. Cheap, common, easy.\n\nToday, if you're being normal: grab any old Cortex M0 micro and just bit-bang the display module directly. Maybe through a port expander or, if you're really fancy, a 7-segment driver IC that speaks I2C and runs like a dozen digits at once, with dot support and like 4 bonus GPIOs on the side because the package had free pins.",
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