Choosing between the Portable or Installer versions of TDSL Personal Edition (Tube Data Sheet Locator by Duncan Amps) depends entirely on how frequently you use the software and whether you need to access it across multiple computers.
Both versions contain the exact same database of vacuum tubes, pinout information, and data sheet links. Neither option requires a separate license or fee. The Quick Answer
Choose the Installer version if you work from a single main computer, look up tube data regularly, and want automatic shortcuts added to your Start Menu and Desktop.
Choose the Portable version if you want to keep the tool on a USB flash drive to use on different workshop PCs, or if you prefer keeping your Windows registry completely clean. Direct Comparison Portable Edition Installer Edition Installation Required No (Just extract and run) Yes (Standard Windows wizard) File Location Single, self-contained folder Standard Program Files directory System Footprint Leaves no traces / clean registry Adds system shortcuts and uninstaller Portability Can run straight off a USB stick Tied to the local machine Data Updates Manual file replacement Handled via installer or override How to Delete Simply delete the application folder Use Windows Add/Remove Programs Why Choose the Portable Edition?
Difference between Installer and Portable Editions – Vovsoft
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