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1 Base-5 Ethernet: A version of Ethernet that operates
a 1 MB/s over twisted pair wire. Also known as StarLan.
Not popular because of slow speed.
10Base-2 Ethernet: A version of Ethernet that
uses thin coaxioal cable and opertes at 10 Mb/s with
a maximum cable length of 185 meters. Also called CheapNet.
16-bit word: 16-bit short data word, uses on
16-bit memory column.
32-bit word: Standard 32-bit data word, uses
two 16-bit memory columns.
48-bit word: Usually implies instructon word,
but may also imply 48-bit instruction and 40-bit extended
precision data values that are transferred within 48-bit
words use three 16-bit memory columns.
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