Four Gallium Arsenide and/or Phosphide LED's
Four Gallium Arsenide and/or Phosphide LED's: Texas TIL209 (c.1970); Monsanto MV54 (two on package) (c.1971); Bubble 7 segment used in Sinclair calculator (c.1973); Four other unknown.
Four Gallium Arsenide and/or Phosphide LED's: Texas TIL209 (c.1970); Monsanto MV54 (two on package) (c.1971); Bubble 7 segment used in Sinclair calculator (c.1973); Four other unknown.