FHSS - Frequency Hopping Spread Spectrum
FIB - Focused Ion Beam
FIB - Forwarding Information Base
FIC - Facility Interface Code
FID - Format Indicator
FIFO - First In, First Out
FIFOFS - First In, First Out File System
FIP - FDDI Interface Processor
FIPR - Foundation for Information Policy Research
FIPS - Federal Information Processing Standard
FIR - Finite Impulse Response
FIRST - Forum of Incident Response and Security Teams
FISCAM - Federal Information System Controls Audit Manual
FISPA - Federation of Internet Solution Providers of the Americas
FIT - Florida Institute of Technology
FIT - Functional Integrity Testing
FITS - Flexible Image Transport System
FIX - Federal Internet eXchange
FIX - Financial Information eXchange
FLAC - Free Lossless Audio Codec
FLAG - FAST Legal Advisory Group
FLI - Foreign Language Interface
FLIP - Font Library Index Program
FLIS - Fiberized Link Interface Shelf
FLMSG - Fixed Line to Mobile SMS Gateway
FLOPS - Floating-point Operations Per Second
FLOSS - Free/Libre and Open Source Software
FLP - Fast Link Pulse
FLR - Frame Loss Ratio
FLT - Full Line Terminal
FM - Frequency Modulation
FM - Function Management
FMC - Foundation Management Center
FMD - Fluorescent Multilayer Disk
FMD-ROM - Fluorescent Multilayer Disk Read Only Media/Memory
FML - Field Manipulation Language
FMX - Fenway Management Extensions
FNC - Federal Networking Council
FOCUS - Federation On Computing in the United States
FOIA - Freedom Of Information Act
FOIRL - Fiber-Optic Interrepeater Link
FOLED - Flexible Organic Light Emitting Device
FOMCL - Falling Off My Chair Laughing
FOOL - Foundations of Object-Oriented Languages
FOP - Formatting Objects Processor
FORTRAN - FORmula TRANslator
FOSS - Free and Open-Source Software
FOSSIL - Fido/Opus/Seadog Standard Interface Layer
FOTS - Fiber Optics Transmission Systems
FP - Floating Point
FP - Foundation Profile
FPA - Floating Point Accelerator
FPA - Focal Plane Array
FPBGA - Flip chip Plastic Ball Grid Array
FPC - Front Panel Controller
FPCA - Functional Programming and Computer Architecture
FPCUG - Fallbrook PC Users Group
FPD - Flat Panel Display
FPDP - Front Panel Data Port
FPDU - Framed Protocol Data Unit
FPE - Floating Point Emulator
FPF - Free Protocols Foundation
FPGA - Field Programmable Gate Array
FPI - Family Programming Interface
FPLA - Field-Programmable Logic Array
FPM - Fast Page Mode
FPMPMI - Flat Panel Monitor Physical Mounting Interface
FPR - Frame Policing Ratio
FPS - First Person Shooter
FPS - Frames Per Second
FPSCR - Floating-Point Status and Control Register
FPSE - FrontPage Server Extensions
FPU - Floating Point Unit
FQDN - Fully Qualified Domain Name
FR - Fixed Routing
FR - Frame Relay
FRAD - Frame Relay Access Device
FRAD - Frame Relay Assembler/Dissembler
FRAS - Frame Relay Access Support
FRASM - Frame Relay Access Service Module
FRC - Free-Running Clock
FRF - Frame Relay Forum
FRICC - Federal Research Internet Coordinating Committee
FRIU - Frame Relay Interface Unit
FRR - Fast Retransmit and Recovery
FRS - File Replication Service
FRU - Field Replaceable Unit
FS - File Separator
FSAA - Full Scene Anti-Aliasing
FSB - Front Side Bus
FSC - Fujitsu Siemens Computers
FSD - Fast Spin Down
FSD - File System Driver
FSE - Fractionally-Spaced Equalizer
FSF - Free Software Foundation
FSG - Free Standards Group
FSID - File Space ID
FSIP - Fast Serial Interface Processor
FSK - Frequency Shift Keying
FSM - Finite State Machine