WordWand I ~1982 Lamps were activated one at a time in vertical columns from a 1k x 1 bit RAM chip. Programmed with a pair of switches that walked down each column leaving lamp lit or extinguished. Program could be transferred to another wwI. Gernsnsback Publications almost did a story on this. Ideal Toy Co. came out briefly with "Skywriter" that did the same thing after declining interest. I believe development was concurrent, however.