Various techniques related to clocking for use with automated circuit design and simulations are disclosed. In some embodiments, a method includes receiving descriptions of design circuitry including logic to receive input signals. The method further includes generating additional descriptions through at least one computer program including descriptions of a multiplexer to multiplex the input signals and delayed input signals, and provide them to the logic, and a demultiplexer to demultiplex output signals and delayed output signals from the logic. Other embodiments are described.