Microchips

Since the introduction in 1948 transistors have becoming smaller, cheaper, and more reliable. By 1975 they became so powerful they enabled personal computers, foreshadowing word processors and robots.
 1975 Microchips

Since the introduction in 1948 transistors have becoming smaller, cheaper, and more reliable. By 1975 they became so powerful they enabled personal computers, foreshadowing word processors and robots.