1. A video computing system with automatically refreshed memory comprising: dynamic memory means capable of storing information; display means connected to said dynamic memory means and operating on a raster scanning format; controller means, operatively connected to said dynamic memory means, for sequentially generating addresses corresponding to locations in said memory means and for reading the information at such locations; and central processing means operatively connected to said dynamic memory means, said central processing means operating on an alternating fetch and execute cycle wherein the controller means and the central processing means are substantially synchronized to operate in sequential fetch and execute cycles and wherein during each fetch phase the central processing means has access to the information in said dynamic memory means during each fetch phase but not during each execute phase, such that during said execute phase, the controller means has direct access to said memory means enabling information stored in the dynamic memory means to be supplied to the display means and wherein the sequential and continuous reading of the memory means during each execute phase functions to continuously refresh the dynamic memory means.