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EIA standard for serial data communication; interfaces up to 20 kb/s and NRZ signalling (0 = +3 to 25 V, 1 = -3 to -25V, adopted in CCITT Recommendations V.24, V.28 and DIN 66020, Tables V and IX) |
RS232 : 6 phrases in 2 subjects |
Communications | 5 |
Information technology | 1 |