Xerox PARC (Xerox Palo Alto Research Center)

The Xerox research center where a number of

significant inventions were made in the 1970s.The first graphical user interface (GUI) was invented there, as was Ethernet, laser printing, and object-oriented programming (OOP). Xerox PARC is now PARC

(Palo Alto Research Center, Inc.), an independent research and development company.

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• Table A-1: ADSL Maximum Data Rates
• Table A-2: ASCII Code
• Table A-3: American Wire Gauge (AWG): Select Physical Attributes
• Table C-1: Twisted-Pair Categories of Performance
• Table D-1: Digital Hierarchy: T-Carrier, E-Carrier, and J-Carrier
• Table E-1: EBCDIC Code — 0–255 Decimal Notation
• Table E-2: EBCDIC Code — 00–FF Hexadecimal Notation
• Table E-3: European Digital Hierarchy: E-Carrier
• Table E-4: Frequency Spectrum: Band Designations, Nominal Frequency Ranges, Nominal
• Table E-4: Frequency Spectrum: Band Designations, Nominal Frequency Ranges, Nominal
• Table E-5: Endianess
• Table G-1: G-Series Recommendations
• Table H-1: H.320 Related Standards Recommendations
• Table H-2: SDTV Scanning Formats
• Table H-3: Notation Comparison