- Saddle Mountain, a remote and rocky ridge located in central Washington. These hills rise to 2700 feet and offer stunning views of the desert landscape and the Columbia River below. But that’s not all – the fossilized wood on these rugged hills contains a record of the area’s geological history. Petrified or opalized wood is the official gemstone of Washington, and Saddle Mountain is a treasure trove for rock enthusiasts who love agatized wood.
- Inside an unusual 7400-series chip implemented with a gate array (righto.com)
When I look inside a chip from the popular 7400 series, I know what to expect: a fairly simple die, implemented in a straightforward, cost-effective way. However, when I looked inside a military-grade chip built by Integrated Device Technology (IDT)4 I found a very unexpected layout: over 1500 transistors in an orderly matrix. Even stranger, most of the die is wasted: less than 20% of these transistors are used, forming scattered circuits connected by thin metal wires.