Readme for PRESTO Tester ~~~~~~~~~~~~~~~~~~~~~~~~~~ Before running application, Presto USB drivers must be installed and PRESTO connected. Typical testing without any voltage on VDD requires to switch VDD from PRESTO on (in VDD&AUX options box) to allow power supply for output drivers. There are three different voltage levels on VDD: "<2V", ">2V" and "5V". VPP 13V can be applied to P pin without any voltage on VDD. With 13V on, pin P reads unpredictable value. Pins D and I have very weak pull-downs so they should be readed as log.0 when output is tristated. Pin reads are refreshed about twice per second.Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.