computer_knowlege4_you

Whatever we write on the computer is written in ASCII, every computer user can operate the computer by creating code based on binary system for digits, letters and symbols. But its codes will only apply to programs and commands by that. This allows users of the computer to not exchange information unless they are familiar with the code signals used by each other. In order to facilitate the exchange of information, a standard code has been prepared in America which is now recognized all over the world.It is known as ASCII . In this, every digit, letter or symbol is shown with 8 bits only 0 and 1 numbers are written in these 8 places. Bit- A bit, that is, a binary digit, is the smallest unit of computer memory. It displays a binary digit 0 or 1 in memory. It is a short form of binary digit. Byte- It is the standard unit of computer memory. Every letter, number or special symbol pressed from the keyboard is stored in the ASCII Code in computer memory. Each ASCII Code is o...

Introduction to C Language Today, we are working on computer or mobile in the software or application, language is behind all this and in these languages, C language occupies an important place. Many language, operating system, games have been created by C language. Before introducing C Language, we need to know about the language. What is a language? Language is the medium of communication between two or more persons. Through language, a person can exchange ideas among themselves. A computer is an electronic machine that has no language of its own. The computer required a language to follow our instructions, so a language was created on the basis of the electrical value in the computer. There are generally three types of computer language.      Low-level language     Assembly language     High-level language Low-Level Language: This language is also called machine language, only 0,1 or binary code is used in this ...

The type of data that can be kept in a variable in a programming language is called data type . There are many types of data types such as integer, character, string, real etc. which are kept in a variable in any programming language. All these types are known as data types. When we declare a variable during programming in the normal sense, then you have to tell the compiler what type of data you want to store in the variable, the compiler provides that much memory from the computer memory. With the ability to divide data into different types of language, you can easily work with complex programs. To know the difference between different types of data There are two reasons which are as follows -     The compiler, which translates the program into object code (as 0 and 1), can use the appropriate internal representation for each data type.     While designing a program, programmers can use the correct operator to operate on data of every type. Basic ...

OSI MODEL  What is the OSI model ? The full name of the OSI model is Open Systems Interconnection, developed in 1978 by ISO (Internationa l Standard Organization ) and the model consists of 7 layers. The OSI model is a reference model for communication between two users in a network. Each layer of this model does not depend on the other layer but there is a transmission of data from one layer to another. The OSI model describes how to send and receive data or information in a network. All layers of the OSI model have their own different functions so that data can be easily accessed from one system to another. The OSI model also describes how network hardware and software function as layers with each other. Layers of OSI MODEL OSI model has the following 7 layers                           layers in OSI model PHYSICAL LAYER ...

 MICROPROCESSOR                                          The microprocessor is a clock driven ,programmable,register based device.                                                   t he microprocessor reads the data i.e.binary instruction from the memory .it accepts this binary data as input and process the data according to the instructions and computes the result as output.         Any such machine that does some process (implementation, process) is called processor. The CPU is a very complex (complex) set of Electr...

The microprocessor takes the data from the real world , processes as is according to a program and sends the result to the output devices so that the result can be presented in the real world. The communication between the microprocessor and the outside world (user) is established through I/O devices only. These devices are known as peripheral devices. example. keyboard, mouse, joystick, printers etc.     Definition of peripheral devices : - The peripheral device is a computer device such as: - keyboard or scanner. These devices are not part of the computer. These are auxiliary devices of the computer. A peripheral device provides input / output (I / O) functions to a computer and does not have the capability of computing. Despite the lack of computing capability, it also acts as a computer accessory. The peripheral devices connect to the computer through several I / O interfaces, such as communications , universal serial bus (USB) and serial ports. Type...

The Operating system performs large number of functions . Each function is carried out by a component of the operating system. the component of an operating system   are : 1. Process management sub-system. 2.Memory management sub-system. 3.File management sub-system . 4.I/O system management sub-system. 5.Secondary storage management sub-system. 6.Network management sub-system. 7.Protection sub-system. 8.User interface sub-system. Process Management “An operating system is a collection of programs that manage system resources such as processor memory, input / output devices (I / O devices) and file systems. . "All these systems resources are valuable, which helps the operating system to work co-operatively with each other." The operating system keeps track of the status of each resource and allocates resources for different processes based on a certain policy and also decides how long a process is resourcing. Will use Lastly, it also de-allocates the allocated ...

The Operating system is an interface that provides interaction to user with computer hardware like hard disk, RAM , printers , keyboard etc. it's a most important program in a computer system.                       diagrammatic representation of user interface                                             with computer hardware    this is the one program that runs all the time ,as long as computer is operational .The fundamental goal of computer system to execute user programs and to make solving user problem easier.   the primary goal of an operating system is to make computer operation easy. The secondary goal of an operating system is to make efficient operation of the computer system .  What is an Operating system ? The Operating System acts as a medium between th...