SDA or sda may refer to:
==Science and technology== ===Computing=== /dev/sda, the first mass-storage disk in Unix-like operating systems T-Mobile SDA, a smartphone Screen Design Aid, a utility program used by midrange IBM computer systems SD Card Association, responsible for Secure Digital memory card standards Serial Data Signal of an I²C electronic bus Slow DoS attack Symbolic data analysis
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).