However, using embryonic stem cells as testing grounds for drug safety is still a relatively new concept, and according to some scientists, much more research is needed before it can be determined that the method is viable. Steven Tannenbaum, professor of chemistry and toxicology at MIT, says that drug metabolism in the body is a complex process.
A dual core processor for a computer is a central processing unit (CPU) that has two separate cores on the same die, each with its own cache. It essentially is two microprocessors in one. This type of CPU is widely available from many manufacturers.
This part of the reading will examine the CPU, Buses, Controllers, and Main Memory. Other sections will examine input devices, output devices, and secondary memory. The computer does its primary work in a part of the machine we cannot see, a control center that converts data input to information output. This control center, called the central processing unit (CPU), is a highly complex, extensive set of electronic circuitry that executes stored program instructions.