Definition of a Computer: A computer is an electronic device that operates under the control of a set of instructions that is stored in its memory unit. A computer is a collection of hardware and software components that help you complete many different tasks. A...
Elements Of A Computer System Definition of a Computer: A computer is an electronic device that operates under the control of a set of instructions that is stored in its memory unit. A computer is a collection of hardware and software components that help you complete...
Components of a Computer A computer system consists of both hardware and information stored on the hardware. Information stored on computer hardware is often called software. The hardware components of a computer system are the electronic and mechanical parts The...
First Generation Basic component – Vacuum Tubes 1940-1956 Processing Speed – Slow & Unreliable Machine Heat Generation – Huge amount of Heat generated Size – Bulky & Non – Portable Machine Instructions – Only Machine Language was used User Friendly – Very...
Computer's Primary and Secondary Storage Storage Device/Media Data needs to be stored for later use on storage media. The two types of storage media are: Primary storage media Secondary storage media Primary storage media Random Access Memory (RAM) It is the internal...
The system software is a type of computer program that is designed to run a computer’s hardware and application programs. If we think of the computer system as a layered model, the system software is the interface between the hardware and user applications. The...
Application Software Application software is a program or group of programs designed for end-users. These programs are divided into two classes: system software and application software. While system software consists of low-level programs that interact with computers...
Types of Computer Language Low-Level Languages: A language that corresponds directly to a specific machine High-Level Languages: Any language that is independent of the machine There are also other types of languages, which include System languages: These are designed...
Compilers Besides the application software and the system software, there is a third kind of software called the compiler software. A compiler is a system program that translates source code (user-written program) into object code (binary form). The whole source code...
DOS Commands DOS Commands are instructions to perform tasks on files and directories very useful to Windows users. DOS commands are case insensitive. And as you already know, the file is the area where we store a group of information or data, and the collection of a...
GUI(Graphics User Interface) GUI is a program interface that takes advantage of the computer graphics capabilities to make the program easier to use. Well-designed graphical user interfaces can free the user from learning complex command languages. On the other hand,...
Windows versions Following is a brief summary of the client versions of Windows (a user's PC running Windows). For more on the server versions, see Windows Server 2003, Windows Server 2008, and Windows Server 2012. Windows 10 S (2017) The streamlined version that...
Parts of a Windows in Computer Microsoft Windows, the most widely used operating system in the world, employs the metaphor of a window for navigation and file management. Understanding the parts of a window is the first step to knowing how to navigate through the...
A network topology is the arrangement of nodes -- usually switches, routers, or software switch/router features -- and connections in a network often represented as a graph. The topology of the network and the relative locations of the source and destination of...
Bus Topology In the bus topology, the server is at one end, and the client PCs (devices) are connected at different points or positions along with the network. All signals pass through each of the devices. Each device has a unique identity and can recognize those...
Star Topology is a form of LAN architecture is which nodes on a network are connected to a common central hub or switch, and this is done by the use of dedicated links. In this kind of topology all the cables run from the computers to the central location where they...
Ring Topology This topology is a simple design and consists of a single cable that forms the main data path in the shape of a ring. Each device is connected to a closed-loop of cable. Signals travel in one direction from one node to all other nodes around the loop. In...
Computer Network Types A computer network is a group of computers linked to each other that enables the computer to communicate with another computer and share their resources, data, and applications. A computer network can be categorized by their size. A computer...
Network Configuration Hardware Network configuration is the process of setting a network's controls, flow, and operation to support the network communication of an organization and/or network owner. This broad term incorporates multiple configuration and setup...
Channel A Channel can take many forms, including ones suitable for storage which can communicate a message over time as well as space. A connection between initiating and terminating nodes of a circuit. A single path provided by a transmission medium via either...
Network interface card A network interface card (NIC) is a hardware component without which a computer cannot be connected over a network. It is a circuit board installed in a computer that provides a dedicated network connection to the computer. It is also called a...
ARCNET ARCNET is a widely-installed local area network (LAN) technology that uses a token-bus scheme for managing line sharing among the workstations and other devices connected to the LAN. The LAN server continuously circulates empty message frames on a bus (a line...
Ethernet is the traditional technology for connecting wired local area networks (LANs), enabling devices to communicate with each other via a protocol -- a set of rules or common network language. As a data-link layer protocol in the TCP/IP stack, Ethernet describes...
Network software encompasses a broad range of software used for the design, implementation, and operation and monitoring of computer networks. Traditional networks were hardware-based with software embedded. With the advent of Software-Defined Networking (SDN), the...
Input Devices Input devices are necessary to convert our information or data into a form that can be understood by the computer. A good input device should provide timely, accurate, and useful data to the main memory of the computer for processing. The following are...
Visual Display Unit The most popular input/output device is the Visual Display Unit (VDU). It is also called the monitor. A Keyboard is used to input data and a Monitor is used to display the input data and to receive messages from the computer. A monitor has its own...
Windows operating system is a computer program that manages the resources of a computer and provides an interface between the user and the computer. It performs several important functions, including managing hardware and software resources, providing a graphical user...