Item054: Silicon Wafer Cryptographic Test Circuit Tie Tack - Steel & Rainbow Colors
About the Jewelry
This tie tack was made with a square piece of a silicon wafer. The wafer has multiple chips on it. Also included is a micro-photo of a 1x1mm section of the wafer. This wafer was created with test chips on it. These were test circuits for a Dallas Semiconductor cryptographic processor made in the mid-1990s. The various types of computer chip test circuits allowed the maker to verify that the manufacturing process was working correctly. These test patterns can make some of the most colorful silicon wafers that dramatically change with different lighting. These remind me of the old 1960 style computers lights featured in sci-fi movies. The circuits are created to test various standard circuit types. By creating known circuits with known behaviors, the manufacturing line can be tested for any functional problems. Because only a few test circuit wafers are needed, these are some of the most uncommon chips.
Included in the resealable bag: