With LPTwin you can:

• observe and change the register contents of a parallel interface
• send characters, character strings or control signals via the parallel interface, e.g. to the INTERFACE TRAINING BOARD from hps SystemTechnik, a printer or a simulated printer
• observe the effect of different printer messages such as OFFLINE, Paper Empty etc
• display and print the handshake protocol as a timing diagram
• simulate the handshake protocol