VSM Models

Teletype Terminal

The teletype terminal model is a serial teletype (TTY) terminal model.

The main features of the model are as follows:

• Fully bi-directional - received serial data is displayed as ASCII characters whilst key presses are transmitted as serial ASCII data.
• Simple two wire serial data interface: RXD for received data and TXD for transmitted data.
• Simple two wire hardware handshake interface: RTS for ready-to-send and CTS for clear-to-send.
• Baud rate from 300 TO 57,600 baud.
• 7 or 8 data bits.
• Odd, even or no parity.
• 0, 1 or 2 stop bits.
• XON/XOFF software handshaking in addition to hardware handshaking.

Virtual Terminal connected to an 8051 microprocessor. The output shown here has been slowed down.