Video: Arithmetic Logic Unit (ALU): Definition, Design & Function. An arithmetic logic unit (ALU) represents the fundamental building block of the central processing unit of a computer. An ALU is a digital circuit used to perform arithmetic and logic operations.
Snake Crawls up a Wall. 02.10.2008 - Many people ask me about the climbing capability of snakes. In particular, people want to know if snakes can get up into their attic. The answer is that yes, some species of snake are excellent climbers, and can climb walls.
MikeLane45/iStock/Getty Images. If you're the squeamish type, you may not want to know this, but snakes can get into your toilet, and we're not talking about plumbing augers.When you're using the toilet, the only thing between you and the sewer is about 10 inches of water, and many types of snakes can slither through that.It may help to know it happens rarely, and most snakes that can navigate water pipes are small and nonvenomous. loose cover on your septic tank or a break in the sewer line can provide the necessary access, and while it's unlikely for a snake to crawl through vertical pipes to an upper bathroom, the critter could emerge from a toilet on the ground floor.