sponsored by the Working Group on Semiconductor Devices of the Advisory Group on Electron Tubes. Working Group on Semiconductor Devices of the Advisory Group on Electron Tubes, sponsored by the IEEE Group on Electron Devices, the Society for Information Display, the Advisory Group on Electron Devices. sponsored by the Working Group on Semiconductor Devices of the Advisoty Group on Electron Tubes, Office of the Assistant Secretary of Defense, Research, and Engineering. sponsored by the IEEE Electron Devices Society, the Society for Information Display, the Advisory Group on Electron Devices.