simultaneous computer [´sī·mǝl`tā·nē·ǝs kǝm`pyüd·ǝr] COMPUTER SCIENCE 1. A computer, usually of the analog or hybrid type, in which separate units of hardware are used to carry out the various parts of a computation, the execution of different parts usually overlap in time, and the various hardware units are interconnected in a manner determined by the computation. 2. A computer that serves to back up another computer and can replace it when it is not operating effectively. |