<networking> Fast Ethernet over optical fibre.
(1998-03-23)
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<networking> Any of several Fast Ethernet 100 MBps CSMA/CD standards for twisted pair cables, including: 100BaseTx (100 Mbps over two-pair Cat5 or better cable), 100BaseT4 (100 Mbps over four-pair Cat3 or better cable), 100BaseT2 (in committee; 100 Mbps over two-pair Cat3 or better cable). All are standards (or planned standards) under IEEE 802.3.
(1997-01-07)
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<networking> The predominant form of Fast Ethernet. 100BaseTX runs over two pairs of wires in category 5 cable.
(1998-06-30)
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<networking> A 100 MBps Ethernet standard specified to run over four pairs of category 3 UTP wires (known as voice grade, hence the "VG"). It is also called 100VG-AnyLAN because it was defined to carry both Ethernet and token ring frame types.
100BaseVG was originally proposed by Hewlett-Packard, ratified by the ISO in 1995 and practically extinct by 1998.
100BaseVG started in the IEEE 802.3u committee as Fast Ethernet. One faction wanted to keep CSMA/CD in order to keep it pure Ethernet, even though the collision domain problem limited the distances to one tenth that of 10baseT. Another faction wanted to change to a polling architecture from the hub (they called it "demand priority") in order to maintain the 10baseT distances, and also to make it a deterministic protocol. The CSMA/CD crowd said, "This is 802.3 -- the Ethernet committee. If you guys want to make a different protocol, form your own committee". The IEEE 802.12 committee was thus formed and standardised 100BaseVG. The rest is history.
(1998-06-30)
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Nearby terms: 100BaseFX « 100BaseT « 100BaseTX « 100BaseVG » 100VG-AnyLAN » 10base2 » 10base5
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<networking> (Or "cheapernet") The variant of Ethernet that uses thin coaxial cable (RG-58 or similar), as opposed to 10base5 cable.
The "10" means 10 Mbps, "base" means "baseband" as opposed to radio frequency and "2" means a maximum single cable length of 200m.
(1995-11-14)
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Nearby terms: 100BaseTX « 100BaseVG « 100VG-AnyLAN « 10base2 » 10base5 » 10baseT » 120 reset
<networking> An Ethernet network cabling specification operating at ten Mbps, "baseband" (as opposed to radio frequency), and with a maximum single cable length of 500 metres. This is normally carried on RG8 cable.
(2002-06-17)
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Nearby terms: 100BaseVG « 100VG-AnyLAN « 10base2 « 10base5 » 10baseT » 120 reset » 1-2-3
<networking> A variant of Ethernet which allows stations to be attached via twisted pair cable.
(1995-01-24)
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Nearby terms: 100VG-AnyLAN « 10base2 « 10base5 « 10baseT » 120 reset » 1-2-3 » 1394
<jargon> /wuhn-twen'tee ree'set/ (After 120 volts, US mains voltage) To cycle power on a computer in order to reset or unjam it.
Compare Big Red Switch, power cycle.
(1994-11-23)
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Nearby terms: 10base2 « 10base5 « 10baseT « 120 reset » 1-2-3 » 1394 » 1541
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<hardware> A UART with a one-byte FIFO buffer. The 16450 is a higher speed, fixed version of the 8250. It was superseded by the 16550.
The 16450 was used for the IBM PC AT and PS/2 but will not work in a IBM PC XT.
(2004-03-21)
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Nearby terms: 1541 « 1581 « 16000 « 16450 » 16550 » 16550A » 16650
<hardware> A version of the 16450 UART with a 16-byte FIFO. Superseded by the 16550A.
This chip might not operate correctly with all software.
The 16C550 is a CMOS version.
(2004-03-24)
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Nearby terms: 1581 « 16000 « 16450 « 16550 » 16550A » 16650 » 16750C
<hardware> A version of the 16550 UART. Superseded by the 16650.
(2003-07-05)
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Nearby terms: 16000 « 16450 « 16550 « 16550A » 16650 » 16750C » 16 bit
<hardware> A version of the 16550A UART with a 32-byte FIFO. Superseded by the 16750C.
(2003-07-05)
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<hardware> A UART with a 64-byte FIFO.
The 16C750 is a CMOS version.
[Is there a 16750 (with no "C" on the end)?]
(2004-03-24)
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Nearby terms: 16550 « 16550A « 16650 « 16750C » 16 bit » 16-bit application » 16C550
<architecture, programming> Using words containing sixteen bits. This adjective often refers to the number of bits used internally by a computer's CPU. E.g. "The Intel 8086 is a sixteen bit processor". Its external data bus or address bus may be narrower. The term may also refer to the size of an instruction in the computer's instruction set or to any other item of data.
See also 16-bit application.
(1996-05-13)
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Nearby terms: 16550A « 16650 « 16750C « 16 bit » 16-bit application » 16C550 » 16C750
<operating system> Software for MS-DOS or Microsoft Windows which originally ran on the 16-bit Intel 8088 and 80286 microprocessors. These used a segmented address space to extend the range of addresses from what is possible with just a 16-bit address. Programs with more than 64 kilobytes of code or data therefore had to waste time switching between segments. Furthermore, programming with segments is more involved than programming in a flat address space, giving rise to warts like memory models in C and C++.
Compare 32-bit application.
(1996-04-06)
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Nearby terms: 16650 « 16750C « 16 bit « 16-bit application » 16C550 » 16C750 » 16C850
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<hardware> A version of the 16450 UART in CMOS with 128-byte FIFO.
(2004-03-24)
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Nearby terms: 16-bit application « 16C550 « 16C750 « 16C850 » 1802 » 1NF » 1TBS
<processor> An 8-bit microprocessor manufactured as CDP1802 by HARRIS Semiconductor. It has been around for ten years at least and is ideally suited for embedded applications. Some of its features are: 8-bit parallel organisation with bidirectional data bus and multiplexed address bus; static design -- no minimum clock rate; bit-programmable output port; four input pins which are directly tested by branch instructions; flexible programmable I/O mode; single-phase clock, with on-chip oscillator; 16 x 16 register matrix to implement multiple program counters, pointers, or registers
(1995-11-21)
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Nearby terms: 16C550 « 16C750 « 16C850 « 1802 » 1NF » 1TBS » 1.TR.6
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Nearby terms: 16C750 « 16C850 « 1802 « 1NF » 1TBS » 1.TR.6 » 2
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Nearby terms: 16C850 « 1802 « 1NF « 1TBS » 1.TR.6 » 2 » 20-GATE
<networking, protocol> A control channel protocol for ISDN. It is a national standard in Germany but is being replaced by Euro-ISDN.
(1995-03-27)
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Nearby terms: 1802 « 1NF « 1TBS « 1.TR.6 » 2 » 20-GATE » 2780