The first IC was made out of a thin slice of germanium (the light blue rectangle) and contained a single bipolar transistor (under the large aluminum bar in the center). It had four input/output terminals (the small vertical aluminum bars), a ground (the large bar on the far right), and wires of gold. The assemblage was held together with was. The photo's blue tinge was created by a light shown on the chip. Actual size: 0.040 x 0.062 inches.