The Chip: How Two Americans Invented the Microchip and Launched a Revolution [Paperback]

In addition, the text is littered with errors. "A diode is a dam that blocks current under some conditions and opens it to let electricity flow when the conditions change" is a mighty vague way to say that diodes let current flow one direction and not the reverse. "Materials that have proven the best insulators are indeed those with eight outer electrons" flat out does not parse. Does the material have eight electrons? Is he trying to say that noble gases are the best insulators? "Elements with three or fewer outer electrons are conductors, and those with five or more are insulators" would come as a surprise to metals such as arsenic, antimony or selenium. "Shockley had a reputation for getting the most out of the people who worked for him". I won't even touch that one. "The process that eventually proved best - the process still used today in semiconductor manufacture - was a Bell Labs discovery called diffusion" has so many inaccuracies in one sentence it's hard to know where to start. One might as well say "Plumbing is a process that depends on leakage, a phenomenon invented by the Greeks."

For all that, the book help personalize and make memorable the birth of the silicon chip. It occasionally does a very effective job of distilling the essence of a discovery. If taken with a grain of salt as a journalist's account of an engineering breakthrough, it will leave some lasting memories.

Before integrated circuits could be produced, the transistor had to be invented. Before that time, switching mechanism, required a vacuum tube to control, amplify and switch the flow of electrons through a circuit. It was the discovery that some semiconductor materials could be doped to have an excess of positive charges or negative charges that provided the breakthrough. A strip of germanium could be doped at each end with differing charges leaving a junction in the middle. The junction worked like a turnstile that could control the flow of current when connected to a battery. Variations in current across these junctions connected in the transistor formation could rectify (prevent current from flowing in both directions) and amplify. That's all that's needed to make a radio (I'm oversimplifying obviously) and hundreds of other devices. Transistors required vastly less current than vacuum tubes, were almost infinitely stable, were cheap and gave off little heat.

But, transistors required thousands of connections to the wires coming in order to make a useful circuit, and as demands for more complex circuitry arose the wiring became infinitely complex. This interconnection problem became a huge barrier that could have prevented the effective utilization of the advantages of the transistor

"You read everything. . . You accumulate all this trivia, and you hope that someday maybe a millionth of it will be useful," remembers Jack Kilby, one of the inventors of the integrated circuit. He also insists that he is not a scientist but an engineer. "A scientist is motivated by knowledge; he basically wants to explain something. An engineer's drive is to solve problems, to make something work. . . . Reid has elegantly interwoven the biographies of Jack Kilby and Robert Noyce. One of the delights of the book was learning how the two inventors thought, how they proceeded, and why they went in the directions they did.

Robert Noyce, founder of Intel, had developed a process to make transistors in arrays on a silicon wafer. They cut apart the transistors and then hired "thousands of women with tweezers to pick them up and try to wire them together. It just seemed so stupid." He, too, realized the tyranny of interconnection numbers. What they both came up with was the "Monolithic Idea." The notion that an entire circuit could be designed and produced on those silicon chips.

Obviously, there is little suspense in the story, but Reid captures and holds our attention. Both men accomplished the same feat at about the same time, approaching it from different directions. Kilby showed how the transistors could be placed on a single wafer and Noyce showed how the chips and circuits could be manufactured. Every transistor radio used the patent Kilby was awarded for his work. In so doing, he turned the future that Orwell had predicted in 1984 on its head. Instead of a monolithic centralization of power in the hands of a few computer elite who controlled all the computing power, "the mass distribution of microelectronics had spawned a massive decentralization of computing power. In the real 1984, millions of ordinary people could match the governmental or corporate computer bit for bit. In the real 1984, the stereotypical computer user had become a Little Brother seated at the keyboard to write his seventh-grade science report."

The social impact was enormous. Slide rules that had been ubiquitous were completely eliminated in just a few years by the handheld calculator that has become so cheap it is often given away in promotions. The Japanese gained virtual control over the memory chip industry because of the way they handled their work force. Americans had a monopoly until the 1973 recession. American companies typically lay off workers to save money during downturns. The Japanese try to keep their work force employed. This meant that when the demand for chips exploded, Americans did not have the capacity to produce enough to meet the demand. The Japanese, having trained workers available, met that demand and were able to produce enough at such a volume to keep the price so low as to inhibit any competition. That and their emphasis on high quality gained them 42% of the world market by 1980. The "Anderson Bombshell" report of 1980 (Anderson was a manager at Hewlett-Packard) that showed that Japanese chips were far more reliable than those made in the United States helped seal their market share.

It took winning the Nobel Prize for Noyce and Kilby to be recognized in the United States (Japan, a nation that honors its engineers, had awarded Noyce and Kilby numerous accolades over the years.) The final irony remains that in "our media-soaked society, with its insatiable appetite for important, or at least interesting, personalities, has somehow managed to overlook a pair of genuine national heroes- two Americans who had a good idea that has improved the daily lot of the world."