1. A method for event delivery in a neural network including multiple core circuits, each core circuit comprising an electronic synapse array comprising multiple digital synapses interconnecting a plurality of digital electronic neurons such that each synapse interconnects an axon of a pre-synaptic neuron with a dendrite of a post-synaptic neuron, the method comprising: in each core circuit, integrating input spikes in an integrate and fire digital neuron, and in response to the integrated inputs exceeding a threshold, sending a spike event to digital synapses interconnecting the neuron to other neurons via the synapse array; and receiving a spike event and scheduling delivery of the spike event to a selected axon in the synapse array based on a schedule for deterministic event delivery.