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Parts Of A Computer  and their functions A computer system is made up of hardware and software. Hardware means the physical parts of the computer and software Shears the computer programs that are run on the computer.  The hardware of a computer is classified into three categories -- 1. Input Device  2. Processing Unit, and  3. Output Devices  INPUT DEVICES  : 1. KEYBOARD  The keyboard resembles a typewriter. But there are addmonal keys that handie control functions. The computer keyboard has three categories of keys—~  Alphanumeric keys  Special Keys  Function Keys The Alphanumeric Keys: The Alphanumeric Keys comprise alphabets (A-Z or a-z) ,Numbers (0-9) and other characters like space.  .  /  > < ' " ;  :  ~ @ # $ % ^ & * ( ) + | \ { } [ ] .  The Special Keys : The Special Keys perform specific tasks. Some of the special” keys are Enter or the Return Key, Backspace Key, Del Key, the Ins Key...

  MongoDB illegal instruction (core dumped) issue ! How to install  Mongodb v4.4  ?  What is core-dump ?  Today,             I'm gonna talk about what is core dump   and  how to solve MongoDB illegal instruction (core dumped) issue ,  For that watch this Video ( Language Hindi ) What is   illegal instruction core dumped ? = >  Accessing memory that "does not belong to you" causes a Core Dump/Segmentation fault. A core dump occurs when a piece of code attempts to read and write in a read-only memory location or a freed memory block. It's an error that means there's a problem with the memory. The following are examples of common segmentation errors: Changing the literal value of a string: Because the line *(str+1)= ‘n' tries to write a read-only memory, the following programme may crash (give a segmentation fault error). In  >  C  int main() {      ...

How to Compilation and Execution A C programming File Once you have written the program you need to type it and instruct the machine to execute it To type your C program you need another program called Editor. Once the program has been typed it needs to be converted to machine language (Os and Is) before the machine can execute it. To carry out this conversion we need another program called Compiler. Compiler vendors provide an Integrated Development Environment (IDE) which consists of an  Editor as well as the Compiler.   T here are several such IDEs available in the market targeted towards different operating systems. For example, Turbo C, Turbo  C++ and Microsoft C are some of the popular compilers that work under MS-DOS; Visual C++ and Borland C++ are the compilers  that work under Windows, whereas gcc compiler works under Linux. Note that Turbo C++, Microsoft C++ and Borland C++ software also contain a C compiler bundled with them. If you are a beginner you woul...

The Write First Program  in C Language ? Armed with the knowledge about the types of variables, constants & keywords the next logical step is to combine them to form instructions. However, instead of this, we would write our first C program now. Once we have done that we would see in detail the instructions that it made use of.  what are the Common Rules that are applicable to most of the programs languages ? C program rules that are applicable to most of the programs language :  Before we begin with our first C program do remember the following rules that are applicable to all C programs:  (a) Each instruction in a C program is written as a separate statement. Therefore, a complete  C program would comprise a series of statements.  (b)  The statements m a program must appear m the same order in which we wish them to be executed, unless of course the logic of the problem demands a deliberate ‘jump" or transfer of control to & statement, which i...