The correct answer is: A. Are found at thousands of sites around the world
Supercomputers are the most powerful computers in the world. They are used for a variety of tasks, including weather forecasting, climate modeling, and nuclear weapons design. Supercomputers are found at thousands of sites around the world, including universities, research laboratories, and government agencies.
Option B is incorrect because supercomputers are not typically found on a single silicon chip. Supercomputers are typically made up of thousands or even millions of processors, which are connected together to form a single system.
Option C is incorrect because supercomputers are not usually designed to process accounting applications. Supercomputers are typically used for scientific and engineering applications that require a lot of processing power.
Option D is incorrect because supercomputers are fast enough for most applications. In fact, supercomputers are often used for applications that require the fastest possible processing speeds.
Option E is incorrect because the other options are all incorrect.