A programmable extended resolution digital differential analyser

A digital differential analyser is described which features the economical use of parallel arithmetic, programmable interconnexions and internally-scaled integrators. It is suitable for connexion to a general-purpose digital computer to form a hybrid facility and as such would be capable of solving dynamical problems and simulating systems. The use of carry-save techniques and a `trapezoidal¿ integration algorithm make real-time simulation possible at an acceptable precision.