optical character recognition (OCR)

See OCR.

• Unlicensed National Information Infrastructure (U-NII)
• unshielded twisted pair (UTP)
• unsolicited grant service (UGS)
• unspecified bit rate (UBR)
• unsponsored domain
• UN (United Nations)
• update
• update
• upgrade
• upgrade
• uplink
• upload
• UPnP (Universal Plug and Play)
• upstream
• UPS (Uninterruptible Power Supply)
• uptime
• URI (Uniform Resource Identifier)
• URL (Uniform Resource Locator)
• USAC (Universal Service Administrative Company)
• USB (Universal Serial Bus)
• US-CERT (United States Computer Emergency Readiness Team)
• USDC (United States Digital Cellular)
• USDC (United States Digital Cellular)
• U.S. Digital Cellular (USDC)
• U.S. Digital Cellular (USDC)