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Computer/System Terms

Acronyms - S

S

• SA - System Administrator
• SaaS - Software-as-a-Service
• SAL - soft adjacent layer (read-write head design structure)
• SAN - storage area network
• SAS - single-attachment station
• SATA - Serial Advanced Technology Attachment (interface connecting disk drives to a personal computer)
• SCAT - Single Chip Advanced Technology chipset (multiple chips combined into a single chip)
• SCSI - Small Computer System Interface
• SDLC - Software Development Life Cycle
• SDN - Software Defined Networking
• SID - security identifier
• SIM - Subscriber Identity Module (removable phone chip)
• SIP - Session Initiation Protocol
• SMB - Server Message Block (Protocol used to share files, printers, and other network resources.)
• SOC - System on a Chip
• SPGA - staggered pin grid array (chip underside pin arrangement)
• SQL - Structured Query Language
• SSD - Solid-State Drive (drive using solid-state electronics - no mechanical parts)
• SSID - Service Set Identifier
• SYN - Synchronize or synchronous
• SYN/ACK - Synchronize/Acknowledgment packet

Acronyms - T

T

• TACACS - Terminal Access Controller Access Control System
• TAO - track-at-once recording
• TB - terabyte (one trillion bytes) (1,000,000,000,000 bytes)
• TCP - Transmission Control Protocol
• TCP/IP - Transmission Control Protocol/Internet Protocol
• TDM - Time Division Multiplexing (communication sessions given time slot/take turns transmitting)
• TF - thin film head (read-write head composition)
• TPI - tracks per inch (disk density/recording capacity measure)
• TTL - Transistor-Transistor Logic (digital integrated circuit type)

Acronyms - U

U

• UAC - User Account Control
• UAC - User Agent Client
• UART chip - Universal Asynchronous Receiver/Transmitter chip
• UAS - User Agent Server
• UBR - unspecified bit rate
• uC - microcontroller
• UC - Unified Communications
• UDF - Universal Disk Format
• UDP - User Datagram Protocol
• UI - user interface (user-computer interaction/communication - commands, menus, icons)
• UID - user identifier
• UPS - uninterruptible power supply
• USB - universal serial bus
• uP - microcroprocessor
• UUID - universal unique identifier
• UV - ultraviolet light

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