Is reflected in this chip design magnified four hundred times its fi nal size and mounted onto a viewing screen by this young woman at the l aboratories of AEG-Telefunken in Franfurt am Main. Only such scaled blo w-ups can enable the production of accurate and intricate connective li nks. The next step will be a fortyfold miniaturization of this integrat ed circuit. Its ultimate size, one millimeter square will be obtained w ith photochemical and related techniques. Integrated circuitry is what makes portable computers and television sets run, and gives us the pock et-sized calculator.

AR/MAKPHOTOS/36/47

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