1. A system, comprising: at least one data-to-spike converter unit configured to: receive digital numeric data representing one or more sensory inputs from an external environment; and convert the digital numeric data to spike event data in accordance with a spike coding scheme, wherein the spike event data comprises one or more packets, each packet comprising a spike and a target address for the spike, the number of packets included in the spike event data based on the digital numeric data, and delivery time of each packet to a target address based on the digital numeric data; and an output bus configured to transmit the spike event data to a plurality of neurosynaptic core circuits for processing, wherein the plurality of neurosynaptic core circuits are interconnected via at least one router configured to route one or more packets between the plurality of neurosynaptic core circuits.