An Asynchronous Digital Controller

With the advent of new solid state techniques it becomes feasible to design special purpose preprogrammed digital computers. One application for such a device is in the area of industrial process control. The trend in the field is toward computer control of all industrial processes. To have a single central computer control hundreds of continuous processes in a single plant could be a problem of insurmountable proportions if all problems such as computer failure, subsystem failures, etc. were to be accounted for.