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ichDi;lK| ' IRST demonstrations showing the sci( :ific progress made towards harnessing the tiny transisi', which per- forms many of the functions of electrc tubes, in a wide range of applications useful to rai d, television, and industry, were held during the week f November 17 at the David SarnofI Research Ceisr of RCA, Princeton, N. J. Transistors made from specks of gern nium crystal were shown operating an experimental ortable tele- vision receiver, radio sets, loudspeaker systi is, miniature transmitters, parts of electronic comput< i, and other experimental devices, many of which ai believed to be the first of their kind. Each develo] lent was in the form of a laboratory model which, it w; emphasized, is still in the preliminary and experimenta stage. Appraising the present status of tran< tor develop- ment, Dr. E. W. Engstrom, Vice Preside t in Charge of RCA Laboratories Division, said: "These demonstrations highlight the I :t that tran- sistors are today no longer entirely a res< :ch concern. They are, in the fields of radio and telei ion, an im- mediate problem for advanced developmei by industry engineers who can learn how to put thei to work in evolving more versatile, smaller, sturdier, ad eventually lower cost equipment for industry and the jblic." "We can report that transistors, after; brief four years in the laboratory, can be made to dcnany of the electronic jobs that tubes could do only ter the first twenty years of their existence," Dr. E ;strom con- tinued. "Because transistors, many of \ larger than a pea, have certain propertii ich are no that differ from tubes, more effectivelj now, and always' will perform. "We haven't yet^ niques for transistors,'' manium itself is availabB to get it in the form that^ able characteristics. Thus, types of transistors that are avU is still high. "Even so, a demonstration su| been impossible a year ago, even continued. "We are just at the out! of transistor rypes in operating cir3 types of transistors come from the lal greater power, operating at higher freqHscies, at tioning with greater reliability, we willBxy them we have experimented with the types yoa see here. Dr. Engstrom said that RCA does not expect transistor to supplant the electron tube "any inoie U radio replaced the phonograph." In fact, tB electron tubes may even increase under of commercial transistors. "This is because tfl will allow the development of electronic undreamed of," he said. "Many of these devicd require the work of electron tubes and in will continue to tax the manufacturing capacir electron tube industry. Thus, as transistors place certain tubes in present electronic equipm^ displaced tubes will find new jobs in new devices RADIO Ai