AMPS networks have been replaced by digital networks based on standards including Digital AMPS, GSM, and CDMA2000 which brought improved security as well as increased capacity.

Cellular Digital Packet Data ( CDPD ) was a wide-area mobile data service which used unused bandwidth normally used by AMPS mobile phones between 800 and 900 MHz to transfer data.

Digital Ocean, Inc. an OEM licensee of the Apple Newton, offered the Seahorse product, which integrated the Newton handheld computer, an AMPS / CDPD handset / modem along with a web browser in 1996, winning the CTIA's hardware product of the year award as a smartphone, arguably the world's first.

Since then, support for the service has expanded to include other mobile technologies such as ANSI CDMA networks and Digital AMPS, as well as satellite and Landline networks.

The name " TDMA " is also commonly used in the United States to refer to Digital AMPS, which is an obsolete mobile telephone standard that uses TDMA to control channel access.

* D-AMPS: Digital Advanced Mobile Phone Service, an upgraded version of AMPS, is being phased out due to advancement in technology.

By comparison, TDMA Cellular ( Digital AMPS ) is licensed in blocks of 30 kHz channels, but each emission occupies 40 kHz, and is capable of serving the same number of subscribers per channel as iDEN.

In North America, the technology competed with Digital AMPS ( IS-136, a TDMA technology ).

# REDIRECT Digital AMPS

These are available in Code Division Multiple Access ( CDMA ), Digital Enhanced Cordless Telecommunications – DECT ( TDMA / DCA ) ( See ETSI 6 EN 300 765-1 V1. 3. 1 ( 2001-04 ) -" Digital Enhanced Cordless Telecommunications ( DECT ); Radio in the Local Loop ( RLL ) Access Profile ( RAP ); Part 1: Basic telephony services "), Global System for Mobile Communications ( GSM ), IS136 Time Division Multiple Access ( TDMA ) as well as analog access technologies such as Advanced Mobile Phone System ( AMPS ), for which there will be independent standards defining every aspect of modulation, protocols, error handling, etc.

# redirect Digital AMPS

Telecom originally operated a TDMA ( AMPS, Digital D-AMPS / TDMA ) mobile network ; this was superseded by its CDMA network.

IS-54 and IS-136 are second-generation ( 2G ) mobile phone systems, known as Digital AMPS ( D-AMPS ).

It is a digital extension of AMPS and so it is also quite widely known as Digital AMPS ( D-AMPS ).

* 1990: analog AMPS was superseded by Digital AMPS.

# redirect Digital AMPS

The most widely used of these technologies is called Digital AMPS, or D-AMPS.

They are externally similar to the 3310 and 3390, but use Digital AMPS (" TDMA ")/ AMPS technology rather than GSM.

# REDIRECT Digital AMPS

Another name for IS-54 is United States Digital Cellular ( USDC ).

TDMA is used in the digital 2G cellular systems such as Global System for Mobile Communications ( GSM ), IS-136, Personal Digital Cellular ( PDC ) and iDEN, and in the Digital Enhanced Cordless Telecommunications ( DECT ) standard for portable phones.

The hardware consists primarily of a standard MOS 6502 CPU, which executes the game program, and the Digital Vector Generator ( DVG ), vector processing circuitry developed by Atari themselves.

ATM is a core protocol used over the SONET / SDH backbone of the public switched telephone network ( PSTN ) and Integrated Services Digital Network ( ISDN ), but its use is declining in favour of All IP.

The service can be accessed via Digital terrestrial television ( DTT ) ( DVB-T ), satellite television ( DVB-S ) and cable television ( DVB-C ).

In the same year ( 1964 ), Digital Equipment Corporation ( DEC ) introduced another influential computer aimed at the scientific and research markets, the PDP-8.

Computer controlled music is also found in the performance pieces by the Canadian composer Udo Kasemets such as the Marce ( ntennia ) l Circus C ( ag ) elebrating Duchamp ( 1987 ), a realization of the Marcel Duchamp process piece Erratum Musical using an electric model train to collect a hopper-car of stones to be deposited on a drum wired to an Analog: Digital converter, mapping the stone impacts to a score display ( performed in Toronto by pianist Gordon Monahan during the 1987 Duchamp Centennial ), or his installations and performance works ( e. g. Spectrascapes ) based on his Geo ( sono ) scope ( 1986 ) 15x4-channel computer-controlled audio mixer.

Digital Enhanced Cordless Telecommunications ( Digital European Cordless Telecommunications ), usually known by the acronym DECT, is a digital communication standard, which is primarily used for creating cordless phone systems.

Digital Cinema Initiatives ( DCI ), a joint venture of the six major studios, published a system specification for digital cinema.

* 1965 – Jim Carr ( US ), Digital Strategist

* I3 ( Intelligent Integration of Information ), supported the Digital Library research effort through NSF

Alpha, originally known as Alpha AXP, is a 64-bit reduced instruction set computer ( RISC ) instruction set architecture ( ISA ) developed by Digital Equipment Corporation ( DEC ), designed to replace the 32-bit VAX complex instruction set computer ( CISC ) ISA and its implementations.

Operating systems that supported Alpha included OpenVMS ( previously known as OpenVMS AXP ), Tru64 UNIX ( previously known as DEC OSF / 1 AXP and Digital UNIX ), Windows NT ( until 4. 0 SP6 and Windows 2000 RC1 ), GNU / Linux ( Debian GNU / Linux, Gentoo Linux and Red Hat Linux ), BSD UNIX ( NetBSD, OpenBSD and FreeBSD up to 6. x ), as well as the L4Ka :: Pistachio kernel.

1908 ), 1: 1 – 6, at Perseus Digital Library.

He convinced Digital Equipment Corporation ( DEC ), Intel, and Xerox to work together to promote Ethernet as a standard.

* Sound: Cantonese ( Dolby Digital 5. 1 ), Mandarin ( Dolby Digital 5. 1 )

* Sound: Cantonese ( DTS 5. 1 ), Cantonese ( Dolby Digital 5. 1 ), Cantonese ( Dolby Digital 2. 0 Mono ), Mandarin ( DTS 5. 1 ), Mandarin ( Dolby Digital 5. 1 )

* Personal Digital Cellular, a 2G mobile phone standard developed and used exclusively in Japan

Personal Digital Cellular ( PDC ) is a 2G mobile telecommunications standard developed and used exclusively in Japan.

Digital video was first introduced commercially in 1986 with the Sony D-1 format, which recorded an uncompressed standard definition component video signal in digital form instead of the high-band analog forms that had been commonplace until then.

* METS, a metadata standard maintained by the Library of Congress for the Digital Library Federation

The so-called " DIX " standard, for " Digital / Intel / Xerox " specified 10 Mbit / s Ethernet, with 48-bit destination and source addresses and a global 16-bit Ethertype-type field.

The IHO publishes the international standards related to charting and hydrography, including S-57 IHO Transfer Standard for Digital Hydrographic Data, the encoding standard that is used primarily for electronic navigational charts.

Over the next two years, the standard was discussed and modified by representatives of companies such as Roland, Yamaha, Korg, Kawai, Oberheim, and Sequential Circuits, and was renamed Musical Instrument Digital Interface.

The industry standard command system is Digital Command Control ( DCC ).

Digital broadcasting permits higher-resolution television, but digital standard definition television in these countries continues to use the frame rate and number of lines of resolution established by the analog NTSC standard ; systems using the NTSC framerate and resolution ( such as DVDs ) are still referred to informally as " NTSC ".

* The Digital Radio Mondiale consortium uses WAV files as an informal standard for transmitter simulation and receiver testing.

* September 30 – Digital Equipment Corporation, Intel and Xerox introduce the DIX standard for Ethernet, which is the first implementation outside of Xerox, and the first to support 10 Mbit / s speeds.

Digital meters are rated into four categories based on their intended application, as set forth by IEC 61010-1 and echoed by country and regional standards groups such as the CEN EN61010 standard.

Engineers developed higher-speed DSL facilities such as High bit rate Digital Subscriber Line ( HDSL ) and Symmetric Digital Subscriber Line ( SDSL ) to provision traditional Digital Signal 1 ( DS1 ) services over standard copper pair facilities.

Red Book is the standard for audio CDs ( Compact Disc Digital Audio system, CDDA or CD-DA ).

Companies like TalkingSigns and TextSpeak Systems have pioneered solutions such as TTS for Digital Signage for the Blind, that work via standard speakers and also radio receivers ( ex: BART in the SF Bay area ).

* IRIG 106 — Digital telemetry standard