INFOTECH

INTRODUCTION TO INTERNET   A system of global collection of computers connected to one other is called  internet.       The internet is a huge network of         computers all over the world. ~  The global network links thousands of computersat  universities,research institutions, govrrnoment agencies and business houses throughout the world. ~  Using a small PC at your home and a telephone connection, you can reach anywera in the world through Internet . ~ you can access information on thousand of topic . ~Each computer connected to internet can communication with the other computer . ~  the computer connected to internet must be able to communication with one another .Theis is don by using a language called the transmission     control protocol /Internet    protocol ~  (TCP/IP). This launguage act as a medium of communication among numerous computers in netwok .    ~  ...

System unit: -  The box shaped part of your cpmputer is called as system unit. The system unit itself is the main computer. It houses  motherboard (on which CPU  is fitted), all the circuit boards (or cards), hard disk, CD/DVD drive,On/Off and reset switches and sockets at back for  connecting  monitor  printer , mouse, modem and other peripherals to your computer.  System unit used to come in two flavours -  a) the desktop, and b)  the tower type .  But which the passage of time, the desktop type lost its popularity ,and now tower type system unit is generally preferred by buyers of PC . It usually houses the following components-    Motherboard:- A motherboard is one of the most essential part of computer system .It holds together many of the crucial  components of a computer, inculuding the central processing unit ( CPU ). Processoer :- Also known as microprocessor or the central processing unit (CPU). It is the mai...

There are certain term which are used frequently in the world of internet. So, one needs to be familiar with this terminology. Let us have a look at these: CLIENT SERVER   TCP/IP DOMAIN NAME IP ADDRESS URL   HTTP Client :-  It is a computer system or a program that request for an information or service from a remote system. For instance, when you access any website on Internet, your computer will be considered a client . Server :- The computer system or program that furnishes the request of a client is generally called a server .     TCP :- The acronym TCP/IP stands for ( Transmission Control Potocol ) / ( Internet Protocol ). It is a member protocol of the Internet Protocol suite.          Domain Name :- The domain name refers to the name of the computer on the Internet. It provides a systematic way to address computers over the Intertnet,  which is easier to remember. There are some domain name that end with(.in) instea...

        CPU  :-  C.P.U is the brain of the computer.       It's components is : It is called processor. It can be placed on one or more microchip called integrated circuit (IC) . IC is semiconductor material.   WORK OF THE C.P.U  :  The C.P.U is given instructions and data through programs, then C.P.U fetches program and data from the memory and performs arithmetic and logic operation as per the given instructions and store back to memory.   While processing, the C.P.U stores the data as well as instructions in local memory called registers .         Register are used for storing data, instructions or   intermediate results.       Other than register, C.P.U has two main components:- ALU  (Arithmetic logic unit) CU   (Control unit)  ALU  (arithmetic logic unit)  performs all the arithmetic and logic operation that need to be done as per t...

COMPUTER    :-   A computer is an electronic device that can be programmed to accept data, process it and generate result (output).   Computer system:-  A computer along with additional hardware and software together is called a computer system. WHAT IS CPU AND IT'S COMPONENTS??        CPU  is generally called brain  of computer. It is called........ For more information....