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ias

more about ias

ias

 

  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Pathopoela  \Path`o*p[oe]"la\,  n.;  pl  {-ias}.  [NL.,  from  Gr  ?; 
  ?  passion  +  ?  to  make.]  (Rhet.) 
  A  speech,  or  figure  of  speech,  designed  to  move  the  passion. 
  --Smart. 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  IAS 
 
    The  first  modern  computer.  It  had  main 
  {registers},  processing  circuits,  information  paths  within  the 
  {central  processing  unit}  and  used  {Von  Neumann}'s 
  {fetch-execute  cycle}. 
 
  The  IAS  machine's  basic  unit  of  information  was  a  40  bit 
  {word}  and  the  memory  had  4096  words  A  word  stored  in  memory 
  could  represent  either  an  instruction  or  data.  Each  IAS 
  instruction  was  twenty  bits  long,  so  that  two  instructions 
  could  be  stored  in  each  40-bit  memory  location.  Each 
  instruction  consisted  of  an  8-bit  {operation  code}  and  a 
  12-bit  address  that  could  identify  any  of  2^12  locations  that 
  may  be  used  to  store  an  {operand}  of  the  instruction. 
 
  The  {CPU}  consisted  of  a  data  processing  unit  and  a  program 
  control  unit.  It  contained  various  processing  and  control 
  circuits  along  with  a  set  of  high-speed  {registers}  for  the 
  temporary  storage  of  instructions,  memory  addresses  and  data. 
 
  The  main  actions  specified  by  instructions  were  performed  by 
  the  arithmetic-logic  circuits  of  the  data  processing  unit.  An 
  electronic  clock  circuit  was  used  to  generate  the  signals 
  needed  to  synchronise  the  operation  of  the  different  parts  of 
  the  system. 
 
  (1996-11-24) 
 
 
 
  From  V.E.R.A.  --  Virtual  Entity  of  Relevant  Acronyms  13  March  2001  [vera]: 
 
  IAS 
  Interactive  Application  System  (DEC)




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