4. Serial Port and Modem Basics
- 4.1 Modem Converts Digital to Analog (and conversely)
- 4.2 What is a Serial Port ?
- 4.3 IO Address & IRQ
- 4.4 Names: ttyS0, ttyS1, etc.
- 4.5 Interrupts
- 4.6 Data Compression (by the Modem)
- 4.7 Error Correction
- 4.8 Data Flow (Speeds)
- 4.9 Flow Control
- 4.10 Data Flow Path; Buffers
- 4.11 Modem Commands
- 4.12 Serial Driver Module
* License

