| 摘要 |
<p>1358328 Comparing data GOODYEAR AEROSPACE CORP 5 April 1972 [3 May 1971] 15609/72 Heading G4C Contents searches between data words in a store 12 (Fig. 1) and comparand words are performed, bit by bit, to derive tag bits representing the result of the comparison, data words having a predetermined tag-bit array being read out at the end of the search. As described the tag bits are held in a plated wire associative store 12, a selected bit of each comparand and data word being read into word circuits 18, 20, the circuits 20 being set to write if the data bit is of the required value and a bitselect driver being enabled at the appropriate bit time if the comparand bit has the required value so that a tag bit having the value required by the search operation being performed is entered if both these criteria are fulfilled. In the embodment of Fig. 1 the comparand words are stored in a separate store but in the embodiment of Fig. 2 (not shown) a single storage matrix (40) is provided for both comparand and data fields.</p> |
