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m →DTR configurability on modems: gen fixes, typos fixed: 9600 bps → 9600 bit/s (2) using AWB |
m →As used on serial printers: clean up, flow control using AWB |
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==As used on serial printers==
On some serial printers, the DTR line is used for hardware [[flow control (data)|flow control]], similar to how RTS and CTS are used on modems. This practice is not consistent - other printers define RTS for this same purpose.
When DTR is used for flow control, this is to manage data from the printer to the computer. However, because during printing, the bulk of the data is from the computer to the printer, the importance of flow control in the opposite direction is minimal.
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