wait state


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wait state

[′wāt ‚stāt]
(computer science)
The state of a computer program in which it cannot use the central processing unit normally because the unit is waiting to complete an input/output operation.

wait state

(architecture)
A delay of one or more clock cycles added to a processor's instruction execution time to allow it to communicate with slow external devices. The number and duration of wait states may be pre-configured or they may be controlled dynamically via certain control lines.

wait state

The time spent waiting for an operation to take place. Wait states are often idle computer cycles, because a computer's CPU is much faster than main memory. Wait states are introduced between the time the CPU requests data from the RAM (an address is placed on the address bus) until the content has been delivered to the CPU. See address bus.