The 4004 employs a 10 �m process silicon-gate enhancement load pMOS technology on a and can execute approximately 92, 000 instructions per second; a single instruction cycle is The original clock rate design goal was 1 MHz, the same as the IBM 1620 Model I.
22.
In computer engineering, "'out-of-order execution "'( or more formally "'dynamic execution "') is a paradigm used in most high-performance microprocessors to make use of instruction cycles that would otherwise be wasted by a certain type of costly delay.
23.
The OPR instruction was said to be " microcoded . " This did not mean what the word means today ( that a lower-level program fetched and interpreted the OPR instruction ), but meant that each bit of the instruction word specified a certain action, and the programmer could achieve several actions in a single instruction cycle by setting multiple bits.
