I know what IBM 3270 emulation is. How is 3770 emulation different from 3270 emulation?
It is easy to be confused when talking about the various IBM terminals and emulators that bring the functionality of these terminals to the PC. Although they may both use one of the same underlying SNA protocols, IBM 3270 emulation and 3770 emulation are as different as night and day. A 3270 terminal was an interactive display station and keyboard often with an attached Model 3287 printer. Such terminals are designed for an operator to make queries and enter data interactively. A 3770 terminal is designed to transmit and receive data in large batches — originally via punch cards and printed output, now via disk files. One key clue to the fundamental differences between the two types of terminals is the large display found on 3270 terminals, while a 3770 terminal had only a small console display, or no display at all.
