4 ms·
> And I already have to buy a serial (rs232) adapter, because they removed it for no real reason. RS-232 is a pain, it's one of the few users of negative volta
by cesarb 3y ago
> And I already have to buy a serial (rs232) adapter, because they removed it for no real reason.
RS-232 is a pain, it's one of the few users of negative voltages on a PC (others being ISA cards and PCI cards; PCI Express finally removed the last negative voltage pin), and the input needs to be tolerant of any voltage between -25V and +25V. I can see why computer manufacturers would love to not have to deal with it anymore.
- ajsnigrutin 3y agoAnd somehow a usb->rs232 adapter can handle all that, including negative voltages and costs less than $5, and a max232 chip for less than $1.