Rachiyta Book

Computer:-  It is an electronic device which process information based upon the instructions. Provides & generate the decide output. Computer is an electrical device which means its able to process arithmetic or logical operation based on the feeder instructions. Computer elements:- Hardware software people Producer  Data information  Memory:-  Enables a computer to store the data & programs temporary . Mass storage device:-  Used for permanently retail large amount of data. Eg:- Pen drive, Hard disk, CD, DVD, etc. Input device:-  The device use for entering data or instruction to the computer are called input device. Eg:- Key Board, Mouse, etc. Output device:-  It let us to see the result or output which the computer has generate. Eg:- Monitor, Printer. CPU:-  It is the most important component we can also say that CPU is the heart of computer which execute the instructions. Characteristics of Computer:- Automatic speed Accuracy Versatili...

Types of Computers:- Super computer:-  Fastest calculating device can process the data in neno pico second. Use to create & analysis models and nuclear fusions & fission, producing action & reaction of millions of all atoms as they react. Helps in analyzing weather patterns & global worming & the depletion of earth ozone layer, can store very large amount of data. Mainframe Computer:-  Higher connectivity, fastest through puts & large data processing capabilities, also support large capacity disk can connect over 256 terminal. Process large number of application library for helping to application developers have the capability of addressing large memory size as compare to mini computer. Mini Computer:-  It also support multi user environment, use for resource sharing, memory size is large , support multiple terminal. Bit using high performance & high capability process. Provide to connect multiple printer. Micro Computer:-  It is smallest ...

 Programming language of computer:- A program is a set of instruction which is executed by a computer. A programming language consist of all the symbols, characters, usages rule which  permits the people to communicate with computer programming language are classified into two languages. Low level language:-  It is closer to the machine architecture & it varies from machine to machine.  There are two types of low level language:-  A. Machine language  B. Assembly language     A. Machine language:- It contains string of binary number (0's and 1's compliment) is machine development the machine language for every processor is different.     B. Assembly language:- An  assembly language  is a type of low-level  programming language  that is intended to communicate directly with a  computer's  hardware. Unlike machine  language , which consists of binary and hexadecimal characters,  assembly lan...

SDLC (Software Development Life Cycle):- The system development life cycle also referred as to the application of development of life cycle is a done use in system engineering of software engineering. Phases of SDLC:- Gathering and analysis  Design Implementation of coding Testing Deployment  Maintenance Gathering and Analysis:- This is the first level of software development life cycle in this stage at the first all the information or gathered once then after analysis of information is taken. After gathering information the analysis is taking because to know what kind of software we have to developed by analyzing we come to know about software knowledge. Design:- After completing  the first step which was of gathering information an than analyzing them. Now we come for designing is the very much important role in SDLC. In this point we design a good quality of software. Implementation:- It is also most important point of SDLC. After designing the codes of software there ...