which i/o address is used by the com2 port
I/O port 0x2F8
title: COM (hardware interface) text: was removed from most IBM PC compatible computers in the 2000s, an external USB-to-UART serial adapter cable was used to compensate for the loss. A major supplier of these chips is FTDI. The COM ports are interfaced by an integrated circuit such as 16550 UART. This IC has seven internal 8-bit registers which hold information and configuration data about which data is to be sent or was received, the baud rate, interrupt configuration and more. In the case of COM1, these registers can be accessed by writing to or reading from the I/O addresses 0x3F8 to 0x3FF. If the CPU, title: COM (hardware interface) text: for example, wants to send information out on COM1, it writes to I/O port 0x3F8, as this I/O port is "connected" to the UART IC register which holds the information that is to be sent out. The COM ports in PC-compatible are typically defined as: COM (hardware interface) COM (Communication port) is the original, yet still common, name of the serial port interface on IBM PC-compatible computers. It might refer not only to physical ports, but also to virtual ports, such as ports created by Bluetooth or USB-to-serial adapters. Most PC-compatible computers in the 1980s and 1990s had one or title: COM (hardware interface) text: COM (hardware interface) COM (Communication port) is the original, yet still common, name of the serial port interface on IBM PC-compatible computers. It might refer not only to physical ports, but also to virtual ports, such as ports created by Bluetooth or USB-to-serial adapters. Most PC-compatible computers in the 1980s and 1990s had one or two COM ports. As of 2007, most computers shipped with one or no physical COM ports. As of 2014, most PC-compatible computers don't include any COM ports, though some of them do still include a COM header on the motherboard. After the RS-232 COM port title: PS/2 port text: short period, but soon switched to purple.) Today this code is still used on most PCs. The pinouts of the connectors are the same, but most computers will not recognize devices connected to the wrong port. PS/2 ports are designed to connect the digital I/O lines of the microcontroller in the external device directly to the digital lines of the microcontroller on the motherboard. They are "not" designed to be hot swappable. Hot swapping PS/2 devices usually does not cause damage because more modern microcontrollers tend to have more robust I/O lines built into them which are harder to damage title: AS2 text: of relying on dial-up modems for ordering goods. Amazon, Target, Lowe's, Bed, Bath & Beyond and thousands of others followed suit. They showed they could cut costs and achieve near real-time EDI communication with direct AS2 EDI, bypassing expensive, legacy value-added networks (VANs). Now, many other industries use the AS2 protocol, including healthcare, as AS2 meets legal HIPAA requirements. AS2 AS2 (Applicability Statement 2) is a specification about how to transport data securely and reliably over the Internet. Security is achieved by using digital certificates and encryption. The AS2 protocol is based on HTTP and S/MIME. It was the second