An application of computerized equipment that allows data to be processed with relation to ongoing external events, so the operation can make immediate diagnostic or other decisions based on the current data output.

Ultrasound scanning uses real-time control systems, making results available almost simultaneously with the generation of the input data.

The instantaneous pricing of electricity, based on the cost of the electricity available for use at the precise time it is consumed by the customer.

In medicine, the imaging of an entire object, or a cross-sectional slice of the object, at a single moment.

To produce such an image, the data must be recorded quickly over a very short time rather than by accumulation over a longer period.