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.
To repel snakes: Snake repellents, such as Snake-A-Way and the stronger Doctor T's Snake Away Â© have produced mixed results. Snakes smell things via their tongues and the Jacobson's organ, which is located in the roof of the mouth.