18-bit computing: Difference between revisions

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{{N-bit|18|(2.25 [[Octet (computing)|octets]])}}
 
Eighteen binary digits have {{val|262144}}262,144 (1000000 [[octal]], 40000 [[hexadecimal]]) distinct combinations.
 
Eighteen bits was a common [[Word (computer architecture)|word]] size for smaller computers in the 1960s, when large computers often using [[36-bit|36 bit words]] and [[Six-bit character code|6-bit character sets]], sometimes implemented as [[BCD (character encoding)|extensions of BCD]], were the norm. There were also 18-bit teletypes experimented with in the 1940s.