Summary: retrieved by means of a laser beam that

Summary:A bit isthe little amount of data in the computer. Bits have a single binary value, 0or 1.

Computers typically provide commands to control and manipulate bits, butare typically designed to store data and to access bit numerous instructionscalled bytes. Boolean operators are simple words (AND, OR, XOR & NOT) Joinwhich joins or excludes search terms in belonging search Productive results.Avoid inappropriate strokes and save time and effort. It must be scanned beforebeing destroyed. ANDrepresent that one statement is true and other is false.

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OR represent any onestatement is correct. In XOR only one statement is true. Not represent we willgive input then they give to contrast output. A Device which give us an outputwhen we give input .It is called Gates.

A group of circuits is known as FlipFlop. For thedetermination of storing data, a computer covers a large group of circuits (suchas flip-flops), each skilled of storing a single bit. This bit reservoir iscalled the machine’s main memory. A computer’s Main memory organize incontrollable units this unit is called cell.

Every cell consists of 8 bits and8 bits is equal to one byte. In a computer there is no left & right. Bits placein a row. The left side of this row is called high order end and the other endis low order end.

To categorizespecific cells in a computer’s main memory, each cell is allocated a unique”name” is called address. In computer’s main memory is organized as specific,addressable cells, the cells can be recover independently as needed. To showthe capability to access cells in any way, a computer’s main memory its known randomaccess memory (RAM).Due to the decreasing limitation of store data in computerand volatility of data, Mostly in computers have additional memory device. Thisis called mass storage. A turning disk is magnetic coated .It is used to readand write data, is called magnetic disk.

Another class of mass storage systemsapplies visual technology. An example is the compact disk (CD). Information isrecorded on them by creating variations in their reflective surfaces. Thisinformation can then be retrieved by means of a laser beam that detectsirregularities on the reflective surface of the CD as it spin.

  A Flash drive is an ultra- portable device.It is very small and unlike an optical or conventional hard drive .This deviceis the combination of USB device and cable. Data store in the form of group aslarge unit. it is called file. Thetechnique which is used to data transferring and storing .

it is  reduce the size of data .It is called datacompression .This code not only detect the mistake but also correct themistake, its known as Error correcting code. The codewhich does is encoded to audios and videos. This code is called MPEG.

Imagesnormally encode in GIF. how data can be encoded as bit patterns. Our studyfocuses on popular methods for encoding Text, Numerical data, Images, and Sound.Each of these systems has repercussions that are often visible to a typicalcomputer user.

Information in the form of text is normally represented by meansof a code in which each of the different indication in the text (such as theletters of the alphabet and punctuation marks) is assigned a uncommon bitpattern. The text is then represented as a long string of bits in which the succeedingdesigns represent the successive indication in the original text storinginformation in terms of encoded characters is inefficient when the informationbeing recorded is purely numeric. Suppose the problem of storing the amount 25.If we insist on storing it as encoded symbols in ASCII using one byte persymbol, we need a total of 16 bits. Moreover, the largest number we could storeusing 16 bits is 99. One means of representing an image is to interpret theimage as a collection of dot.

The appearance of each pixel is then encoded andthe entire image is represented as a collection of these encoded pixels. Such acollection is called a Bit Maps.