Summary:Abit is the little amountof data in the computer.
Bits have a single binary value,0 or 1. Computers typicallyprovide commands tocontrol and manipulate bits, but are typicallydesigned to store data and to access bit numerous instructions called bytes. Boolean operators aresimple words (AND, OR, XOR& NOT) Join which joins or excludes search terms in belonging search Productive results.
Avoid inappropriate strokes and save time and effort. It must be scanned before being destroyed. AND represent that one statement is true and other is false. OR represent any one statement is correct. In XOR onlyone statement is true.
Not represent we will give input then they give to contrast output. A Device which give us an output when we give input .It is called Gates. A group of circuits is known as Flip Flop. Forthe determination ofstoring data, a computer covers a largegroup of circuits (such asflip-flops), each skilledof storing a single bit.This bit reservoir is calledthe machine’s main memory.
A computer’s Main memory organize in controllable units this unit is called cell. Every cell consistsof 8 bits and 8 bits isequal to one byte. In a computer there is no left& right. Bits placein a row.
The left sideof this row is called highorder end and the otherend is low order end.To categorize specific cells in a computer’s main memory, each cell is allocated aunique “name” is called address. In computer’s main memory is organized as specific, addressable cells, the cells can be recover independently as needed. To show the capability to access cells in anyway, a computer’s main memory its known random access memory (RAM).Due to the decreasing limitation of store data in computer and volatility of data, Mostlyin computers have additional memory device. This is called mass storage. A turningdisk is magnetic coated .It is used to read and write data, is called magnetic disk.
Another classof mass storage systems applies visual technology. An example is the compact disk (CD). Information is recorded on them by creating variationsin their reflective surfaces.This information can then be retrieved by means of a laserbeam that detects irregularities on the reflective surface of the CD as it spin. AFlash drive is an ultra- portable device. It is very small andunlike an optical or conventional hard drive .This device is the combination of USB device and cable.
Data storein the form of group as large unit. it is called file. The technique which is used to data transferringand storing .
it is reduce the size of data.It is called data compression .This code not only detect the mistake but also correct the mistake, its known as Error correcting code. The codewhich does is encoded to audiosand videos. This code iscalled MPEG. Images normally encode in GIF.
how data canbe encoded as bit patterns. Our study focuses onpopular methods forencoding Text, Numericaldata, Images, and Sound. Eachof these systems hasrepercussions that are often visible to a typical computer user.
Information in the form of text is normally represented by means of a code in which each of the different indication in the text (such as the letters of the alphabetand punctuation marks) is assigned a uncommonbit pattern. The text isthen represented as a long string of bits in whichthe succeeding designs represent the successive indication in the original text storing information in terms of encoded characters is inefficient when the information being recorded is purelynumeric. 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 meansof representing an image is to interpret the image as acollection of dot. The appearance of each pixel is then encoded and the entire imageis represented as a collection of these encodedpixels. Such a collectionis called a Bit Maps.