SFS - Stepless Frequency Selection
SFS - Structured File Server
SFT - System Fault Tolerance
SFT - System File Table
SFTP - Screened Foiled Twisted Pair
SFTP - Simple File Transfer Protocol
SFU - Services For UNIX®
SFUG - Security Features User's Guide
SG - Signal Ground
SG - Signalling Gateway
SGA - Shared Global Array
SGA - Simple Genetic Algorithm
SGA - System Global Area
SGC - SCSI Graphic Commands
SGC - Server-Gated Cryptography
SGC - Systems Graphics Connect
SGCP - Simple Gateway Control Protocol
SGE - Sun ONE Grid Engine
SGF - Structured Graph Format
SGI - Silicon Graphics, Inc.
SGML - Standard Generalized Markup Language
SGMLB - Standard Generalized Markup Language Binary
SGMP - Simple Gateway Monitoring Protocol
SGP - Signalling Gateway Process
SGR - Select Graphic Rendition
SGRAM - Synchronous Graphics Random Access Memory
SGSN - Serving GPRS Support Node
SGT - Surrounding Gate Transistor
SGTSI - Semi-Graphical Tree Structure Interface
SHA - Secure Hash Algorithm
SHA - Super High Aperture
SHD - Subsystem Hosting Designer
SHED - Segmented Hypergraphics EDitor
SHF - Super-High Frequency
SHISAM - Simple Hierarchical Indexed Sequential Access Method
SHORE - Scalable Heterogeneous Object REpository
SHSAM - Simple Hierarchical Sequential Access Method
SHTML - Server-side include HyperText Markup Language file
SHTTP - Secure HyperText Transfer Protocol
SHV - Standard High Volume
SI - Shift In
SI - Source Index
SI - SPARC™ International
SI - Strategic Infrastructure
SI - System Information
SI - Systems Integrator
SIA - Security Intelligence Alert
SIA - Semiconductor Industry Association
SIAC - Securities Industry Automation Corporation
SIAM - Society for Industrial and Applied Mathematics
SIB - Service Independent Block
SIB - Standards Information Database
SIB - Switch Interface Board
SIBO - SIngle Board Organizer
SIBO - SIxteen Bit Organizer
SIC - Silicon Integrated Circuit
SIC - Standard Industry Classification
SIC - Subject Indicator Code
SICS - Security Intelligence and Control Services
SICS - Swedish Institute of Computer Sciences
SID - Security ID
SID - Service ID
SID - Signaling ID
SID - Society for Information Displays
SID - SWIFT Interface Device
SID - System ID
SIDF - System Independent Data Format
SIDL - Scientific Interface Definition Language
SIDM - Serial Impact Dot Matrix
SIDR - Service Independent Data Requester
SIF - Schools Interoperability Framework
SIF - Standard Interchange Format
SIFT - Software Implemented Fault Tolerance
SIFTUFT - Sender-Initiated File Transfer%2FUnsolicited File Transfer
SIG - Special Interest Group
SIGART - Special Interest Group on ARTificial intelligence
SIGBIT - Special Interest Group on Business Information Technology
SIGCAT - Special Interest Group on CD-ROM Applications Technology
SIGCPR - Special Interest Group on Computer Personal Research
SIGCSE - Special Interest Group on Computer Science Education
SIGDA - Special Interest Group on Design Automation
SIGMA - Software Industrialized Generator and Maintenance Aids system
SIGNC - Special Interest Group Name Cache
SIGPLAN - Special Interest Group for Programming LANguages
SIGWEB - Special Interest Group on the WEB
SII - Static Invocation Interface
SIIA - Software and Information Industry Association
SILC - Secure Internet Live Conferencing
SiLK - System for Internet Level Knowledge
SILS - Secure Interoperable LAN Standard
SILS - Standard for Interoperable LAN Security
SIM - SCSI Interface Module
SIM - Set Initialization Mode
SIM - Set Initialization Module
SIM - Signal Interface Module
SIM - Society for Information Management
SIM - Subscriber Identity Module
SIMD - Single Instruction Multiple Data
SIMDIS - SIMulation DISposition
SIML - System Information Markup Language