A light-emitting element includes an EL layer between an anode and a cathode, and a first layer, a second layer, and a third layer between the cathode and the EL layer. In one aspect, the detailed technology concerns phone-based cognition of a scene viewed by the phone’s camera. The sub data comprises coded text lines having a plurality of character codes. The first passage is communicated with a nozzle of the first ejector, and the second passage is communicated with a nozzle of the second ejector. The method further includes configuring the CPU core to conduct NVRAM read operations directly over the memory bus, and providing an IO logic device to process write instructions initiated by the CPU core as a Direct Memory Access write operation on the NVRAM. The second imaging system is arranged such that the second imaging system is outside a field of view of the first imaging system.