Computing
- Windows Installer, an installer system written by Microsoft for Windows platforms (note the .MSI file extension)
- Medium Scale Integration, a generation of integrated circuit chips which contain hundreds of transistors
- Message Signaled Interrupts, a PCI 2.2 interrupt-mechanism
- Micro-Star International, a Taiwan-based manufacturer of computers and components
- MSI protocol, a basic cache-coherence protocol used in multiprocessor systems
Read more about this topic: MSI