Crystalfontz 633 WinTest gives you a RS-232 Test and Demonstration Software for the 633. Here are some key features of Crystalfontz 633 WinTest: Demonstrates features of CrystalfontzCFA- 633 Module. Allows experimenting with the LCD's command set. Example data may be copied from the Acrobat PDF manual and pasted into 633_WinTest Packet Debugger. Sends any binary code from 0 to 255. This version is the first release on CNET Download.com.