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AT&T

Founded in 1885 as the American Telephone and Telegraph Co., AT&T is one of the world's largest telecommunications companies, but is no longer "Ma Bell." Until the 1970s, AT&T was the world's largest company. Bell Labs, its famed research division, won numerous Nobel prizes and invented some of the twentieth century's greatest technologies, including the semiconductor and the integrated circuit. Government antitrust actions broke AT&T into the "Baby Bells," and in the 1990s the company spun off two of its divisions: Lucent Technologies (much of the Bell Labs) and NCR Corporation. The famous AT&T brand and logo could disappear forever after its purchase by SBC Communications, one of its offspring Baby Bells.

Complete Die Photomicrographs
1616 Digital Signal Processor

Small Die (75K) | Medium Die (139K) | Large Die (194K)

High Magnification Images

1616F DSP Wafer (63K) - Partial die shot showing the chip identifier, 1616F, and surrounding bus connections using oblique illumination with red and blue gels.

1616F Digital Signal Processor (77K) - Partial die shot showing the thousands of bus connections on the main body of the DSP chip with oblique illumination using red and blue gels.

1616F Digital Signal Processor (86K) - Partial die shot of the chip identifier, 1616F, and surrounding bus connections with oblique illumination using red and blue gels.

1616F Digital Signal Processor (77K) - Partial die shot of a junction between scribe lines on the DSP wafer with oblique illumination using red and blue gels.


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