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Computer network is defined as a collection of interconnected autonomous systems that facilitate distributed processing of information. It leads to better performance with high speed of processing.
The main advantage of computer network are
File can be stored in center hub and access by every network in the organization.
Network users in the organization can communicate with each others and can share files and data.
Network users cannot access other user’s files unlike on stand-alone machines.
Computer network makes possible to solved complex program by connecting the network users of the organizations. This helps to solve the program quickly and easily.
Although, the cost for setup is high for the computer network but there are hidden cost that we can get benefits. If there is not connected network the we have to spend more on software to connect the computers separately. It means there is not need to by software to connect each and every user.
System software is a software designed to interact with hardware. It act as interface between user and device. It also provide the platform for running other software.
There are 5 types of system software
Operating systems are the programs that run on computer. Every computer have a operating system to run other programs. OS perform basic tasks suchas recognizing input, sending output to the screen, keeping track of files and directories on disk and controlling peripheral devices such as disk drivers and printers.
Most Commonly used operating systems include Microsoft Window. DOS, Mac OS, OS/2, UNIX etc
Compiler is a program that translates source code into object code. The compiler takes the source code and recognizes the instructions.
Interpreters analyzes and executes each line of source code in succession, without looking at the entire program.
Program execute by compilers run much faster than the same programs executed by an interpreter.
Device drivers are the software to run the peripheral devices like mouse, keyboard, printers, modems etc. Most peripheral devices attached with CPU needs device drivers to carry out the functions.
Device driver lets the CPU know the type of hardware and the type of instruction for a particular device attached with it.
Network topology are the way to connect various nodes, devices, and connections on your network physically or logically in relation to each other. There are six types of Network Topology
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