24. Create electrical signals based on conditions. ________ 25. Function like fluorescents, but fit standard light sockets. ________ 26. Entire circuits enclosed in a plastic case. ________ 27. Serve as switches and amplifiers. ________ 28. Allow flow in only one direction. ________ 29. Create light from a filament heated by current flow. ________ 30. Low power, low cost, reliable lighting once used only for indicators. A. CFL B. Sensors C. LEDs D. Diodes E. Transistors F. Incandescent bulbs G. Integrated circuits match