18-bit computing: Difference between revisions

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Added a note about the PDP-10 and how it used 18-bit addresses.
Make sure 6-bit char sets links to both relevant pages.
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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 (6Six-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.
 
==Example computer architectures==