Stuart McLachlan
stuart at lexacorp.com.pg
Thu May 19 11:18:31 CDT 2005
On 19 May 2005 at 9:40, John W. Colby wrote: > Look up octal. The registers on all the Sperry Univac machines that I > learned in the Navy had little neon lights behind plastic buttons with > springs in them with switches in them. Thus each button displayed the value > of a bit and the button could be pressed to set the bit when hand > programming them. The registers were "grouped" into 3 bits, each group > represented an octal "digit" (which I quote since digit is specifically > decimal). The entire machine, and all of its instructions were documented > in octal. But you could only store 8 values in each "digit" Look up Byte :-) -- Stuart