A neuromorphic device includes an input device; an output device; and a neural network including a first synapse network and a second synapse network between the input device and the output device. The first synapse network includes a first synapse system having higher learning efficiency than the second synapse network, and the second synapse network includes a second synapse system having more excellent data retention capability than the first synapse network.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A neuromorphic device comprising: an input device; an output device; and a neural network including a first synapse network and a second synapse network, the synapse network being disposed between the input device and the output device, wherein the first synapse network includes a first synapse system having a higher learning efficiency than the second synapse network, and wherein the second synapse network includes a second synapse system having a better data retention capability than the first synapse network. 2. The neuromorphic device according to claim 1, wherein the first synapse network includes a first synapse system and the second synapse network includes a plurality of second synapse systems, which are subordinated to the first synapse system. 3. The neuromorphic device according to claim 1, wherein the neural network further includes a third synapse network disposed between the first synapse network and the second synapse network, and wherein the third synapse network has a better data retention capability than the first synapse network and a worse retention capability than the second synapse network, the third synapse network having a higher learning efficiency than the second synapse network and a lower learning efficiency than the first synapse network. 4. The neuromorphic device according to claim 3, wherein the third synapse network includes a plurality of third synapse systems, which are subordinated to the first synapse system. 5. The neuromorphic device according to claim 3, wherein the second synapse network includes a plurality of second synapse systems, which are subordinated to one of the third synapse systems. 6. The neuromorphic device according to claim 3, wherein a data pattern learned by the first synapse network is transmitted to the third synapse network and saved by the third synapse network. 7. The neuromorphic device according to claim 6, wherein the data pattern saved by the third synapse network is transmitted to the first synapse network and updated by the first synapse network. 8. The neuromorphic device according to claim 1, wherein the first synapse network exclusively learns a data pattern. 9. The neuromorphic device according to claim 1, wherein the first synapse network is potentiated and depressed by first electrical set and reset pulses, the first set and reset pulses having a higher voltage, a larger current, a longer input time, or a larger number of input times than second electrical set and reset pulses used for potentiating and depressing the second synapse network, respectively. 10. The neuromorphic device according to claim 1, further comprising: a pre-processor disposed between the input device and the neural network, wherein the pre-processor distributes a data pattern to be learned to the first synapse network. 11. A neuromorphic device comprising: an input device; a neural network electrically coupled to the input device; and an output device electrically coupled to the neural network, wherein the neural network includes a first synapse network having a first learning speed and a second synapse network having a second learning speed that is slower than the first learning speed. 12. The neuromorphic device according to claim 11, wherein the first synapse network includes a plurality of first synapse systems that have the first learning speed, and wherein the second synapse network includes a plurality of second synapse systems that have the second learning speed. 13. The neuromorphic device according to claim 11, wherein the second synapse network includes a plurality of second synapse systems that are subordinated to the first synapse network. 14. The neuromorphic device according to claim 11, wherein the neural network further includes a third synapse network disposed between the first synapse network and the second synapse network, and wherein the third synapse network has a third learning speed that is slower than the first learning speed and faster than the second learning speed. 15. The neuromorphic device according to claim 14, wherein the third synapse network includes a plurality of third synapse systems that are subordinated to the first synapse network. 16. The neuromorphic device according to claim 14, wherein the second synapse network includes a plurality of second synapse systems that are subordinated to the third synapse network. 17. The neuromorphic device according to claim 14, wherein the first synapse network exclusively learns a data pattern, and wherein the data pattern learned by the first synapse network is transmitted to the third synapse network and saved by the third synapse network. 18. A neuromorphic device comprising: an input device; a neural network electrically coupled to the input device; and an output device electrically coupled to the neural network, wherein the neural network includes a first synapse network having a first data retention capability and a second synapse network having a second data retention capability that is better than the first data retention capability. 19. The neuromorphic device according to claim 18, wherein the neural network further includes a third synapse network disposed between the first synapse network and the second synapse network, and wherein the third synapse network has a third data retention capability that is better than the first data retention capability and worse than the second data retention capability. 20. The neuromorphic device according to claim 19, wherein the third synapse system is potentiated and depressed by third electrical set and reset pulses, respectively, wherein the third electrical set and reset pulses have a higher voltage, a larger current, a longer input time, or a larger number of input times than first electrical set and reset pulses used for potentiating and depressing the first synapse system, respectively, the third electrical set and reset pulses having a lower voltage, a smaller current, a shorter input time, or a smaller input number of times than second electrical set and reset pulses used for potentiating and depressing the second synapse system, respectively.