explain the organism of a l u with the help of simple block diagram
Answers
☇ Answer:
⇨ Alu elements are a type of "jumping gene," or transposable element (TE), that exists only in primates. Like all TEs, they are discrete DNA sequences that move, or "jump," from one place on the genome to another, sometimes inserting copies of themselves directly into the middle of protein-coding genes. Although Alu elements have long been considered "junk" DNA, scientists are beginning to question whether these elements might serve important biological functions after all. While much remains to be discovered about the role of these prolific transposons, researchers now recognize that Alu elements are major players in human evolution, as well as useful tools for molecular genetic and forensic applications.
➩ Most of the operations of a CPU are performed by one or more ALUs, which load data from input registers. A register is a small amount of storage available as part of a CPU. The control unit tells the ALU what operation to perform on that data, and the ALU stores the result in an output register. The control unit moves the data between these registers, the ALU, and memory.
☇ Explanation:
⇨ An ALU performs basic arithmetic and logic operations. Examples of arithmetic operations are addition, subtraction, multiplication, and division. Examples of logic operations are comparisons of values such as NOT, AND, and OR.
➩ All information in a computer is stored and manipulated in the form of binary numbers, i.e. 0 and 1. Transistor switches are used to manipulate binary numbers since there are only two possible states of a switch: open or closed. An open transistor, through which there is no current, represents a 0. A closed transistor, through which there is a current, represents a 1.
➩ Operations can be accomplished by connecting multiple transistors. One transistor can be used to control a second one - in effect, turning the transistor switch on or off depending on the state of the second transistor. This is referred to as a gate because the arrangement can be used to allow or stop a current.
➩ The simplest type of operation is a NOT gate. This uses only a single transistor. It uses a single input and produces a single output, which is always the opposite of the input. This figure shows the logic of the NOT gate: ⇩
