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.
It is hard to believe but snakes have many enemies. Large birds, wild boars, mongooses, raccoons, foxes, coyotes and even other snakes are a few of the dangers snakes fall prey to. Many people find it surprising that the largest and the scariest snakes can be afraid of anything, but it is true. While they are young they are easy prey to many birds and mammals but when they are older and larger they have humans to fear. Humans hunt snakes for various reasons. Many different breeds of snakes are captured and shipped to other countries to be sold in pet shops.