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18 bit teletype note. |
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18 binary digits have {{val|262144}} (1000000 [[octal]], 40000 [[hexadecimal]]) distinct combinations.
18 bits was a common [[Word (computer architecture)|word]] size for smaller computers in the 1960s, when large computers often used [[36-bit|36 bit words]] and [[BCD (6-bit)|6-bit character sets]] were the norm. There were also 18-bit teletypes experimented with in the 1940s.
==Example computer architectures==
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