Computer Desktop Encyclopedia
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3270 emulator
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3270 emulator
A plug-in board that turns a desktop computer into an IBM mainframe terminal. The first 3270 emulator was the Irma board from Attachmate Corporation. The board is sometimes called a "coax adapter" because of its coaxial cable connection to the IBM cluster controller.
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3270 emulator
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3270 emulator
A 3270 Emulator is a computer program that duplicates the functions of an IBM 3270 mainframe computer terminal on a PC or similar microcomputer.
As the original 3270 series terminals were connected to the host computer using coaxial cable, emulators required coax adapter cards to be installed in the PC. Today, many emulators communicate with the mainframe computer through the TN3270 variant of the Telnet protocol common on TCP/IP networks including the Internet, so special hardware is no longer required.
Products
In 1983, IBM marketed the IBM 3270 PC, a bundled package including a PC, 3270 emulation software and coax interface card. 3270 emulators are also available from many third-party vendors like Attachmate and Ericom. Some solutions permitted a coax interface to be shared by workstations in a LAN.
See also
- Irma board
- Terminal emulator
- Systems Network Architecture (SNA)
- Synchronous Data Link Control (SDLC)
- TN3270 Plus
External links
- x3270: open-source, multi-platform TN3270 emulator
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