floating island of garbage
- Reverse engineering the ARM1, ancestor of the iPhone’s processor (righto.com)
Almost every smartphone uses a processor based on the ARM1 chip created in 1985. The Visual ARM1 simulator shows what happens inside the ARM1 chip as it runs; the result (below) is fascinating but mysterious. In this article, I reverse engineer key parts of the chip and explain how they work, bridging the gap between the puzzling flashing lines in the simulator and what the chip is actually doing. I describe the overall structure of the chip and then descend to the individual transistors, showing how they are built out of silicon and work together to store and process data. After reading this article, you can look at the chip’s circuits and understand the data they store.
- Puerto Rico Trash Problem: Understanding the Crisis and Working Toward Solutions (theenvironmentalblog.org)
Puerto Rico is grappling with a pressing trash problem that’s not just a visual blight, but a serious threat to its stunning landscapes, marine life, and the environment. The urgency of this crisis is underscored by its far-reaching impacts on health, tourism, and the economy. Let’s delve into the reasons behind this crisis, its profound effects on Puerto Rico, and the ongoing efforts to restore the island to its former glory.
- Puerto Rico (Wikipedia)
Puerto Rico (Spanish for ‘rich port’; abbreviated PR), officially the Commonwealth of Puerto Rico, is a self-governing Caribbean archipelago and island organized as an unincorporated territory of the United States under the designation of commonwealth. Located about 1,000 miles (1,600 km) southeast of Miami, Florida, between the Dominican Republic in the Greater Antilles and the U.S. Virgin Islands in the Lesser Antilles, it consists of the eponymous main island and numerous smaller islands, including Vieques, Culebra, and Mona. With approximately 3.2 million residents, it is divided into 78 municipalities, of which the most populous is the capital municipality of San Juan, followed by those within the San Juan metropolitan area. Spanish and English are the official languages of the government, though Spanish predominates.
