Founded in 1939 in a garage in Palo Alto, California, Hewlett-Packard is one of the world's largest manufacturers of computers and peripherals. HP is acknowledged by Wired magazine as producing the world's first personal computer in 1968: the Hewlett-Packard 9100A. HP called it a desktop calculator because, as founder Bill Hewlett said, "If we had called it a computer, it would have been rejected by our customers' computer gurus because it didn't look like an IBM." Today, HP is a major developer and producer of printers, personal computers, information storage, test and measurement electronics, medical products, and software.

PA-8000 Microprocessor (74K) - Partial die shot of the HP PA-8000 microprocessor showing the chip identifier an Hewlett Packard logo using dark field illumination with red and blue gels.

PA-8000 Microprocessor (61K) - Partial die shot of the HP PA-8000 microprocessor showing the chip identifier and surrounding bus connections using dark field illumination with red and blue gels.

PA-7300LC Microprocessor (57K) - The digital image presented in this section is a reflected light micrograph of the Hewlett-Packard PA-7300LC microprocessor captured with differential interference contrast (DIC) optics. In order to enhance the visualization of bsusses, registers, and memory caches, the chip was illuminated obliquely using purple and yellow gels with fiber optics light guides and tungsten-halogen illumination.

PA-7300LC Microprocessor (41K) - Partial die shot of the Hewlett Packard PA-7300LC showing a separation between two polysilicon layers using oblique illumination with red, blue, and yellow gels.

PA-7300LC Microprocessor (47K) - Partial die shot of the Hewlett Packard PA-7300LC microprocessor showing the chip identifier using oblique illumination with red, blue, and yellow gels.

PA-7300LC Microprocessor (43K) - Partial die shot of the Hewlett Packard PA-7300LC microprocessor showing a few of the bus connections on the chip using oblique illumination with blue, red, and yellow gels.

PA-7300LC Microprocessor (53K) - Partial die shot of a Hewlett Packard PA-7300LC wafer showing the intersection of two scribe lines using oblique illumination with red, yellow, and blue gels.

PA-7300LC Microprocessor (53K) - Partial die shot of a Hewlett Packard PA-7300LC wafer showing arrows at the intersection of two scribe lines using oblique illumination with blue, yellow, and red gels.

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