Communication and Network

Modulation :-

        Modulation is the process of changeable properties of high frequency periodic waveform with a regulating signal which contains information to be transmitted. It can be used to alternating current, to direct current, and to optical signals.









Demodulation :-

        Demodulation is the opposite of modulation. It is the act of extracting the original data-bearing signal from a regulating carrier wave. It converts analog signals back into digital signals. It is also called detection.

Bandwidth :-

        Bandwidth is the range of frequencies used to transmit signals. It is a range within a band of wavelengths. It has a transmission capacity of a computer network or other telecommunication system.

TCP/IP :-

        TCP/IP is abbreviated as Transmission Control Protocol / Internet Protocol. They are a set of protocols used to take control the connection of the systems in the computer to the Internet. They are the basic language of the Internet.

Node :-

        Node is a connection point used to build linked data structures. For example, a computer-based representations of the graph. It is where two or more circuit elements meet.

Client :-

        A client runs on a personal computer or workstation and accesses a remote service on a server by way of a network. It is a node that asks and uses resources available from other nodes.

Server :-

        A server is a computer program that has been assigned to hold large quantities of data and stream it to the users who requested them. It manages access to a consolidated resource or service in a network.

Network Operating System :-

        A network operating system is also known as NOS. It is an operating system that holds components and programs that allows a computer on a network to serve requests from other computers for information. It controls the computer systems, peripherals and the communication between them.

Network Administrator :-

        A network administrator is a computer professional that is responsible for maintaining the computer hardware and software comprises a computer network. In other words, a network administrator is responsible for efficient network operations and implementation of all networks.

Secondary Storage

Disk Caching :-

        Disk caching is part of RAM used to temporarily hold information read from a disk, which speeds up the process. It stores copies of frequently used disk sectors so they can be read easily.






File Compression :-

        File compression is the process of confining information in a file in order to save space or transmission time. It is used to reduce storage requirements.




File Decompression :-

        File decompression is the opposite of file compression. It decodes the information that has been compressed back to its original state.

Internet Hard Drive :-

        Internet hard drive is also known as an online storage. It helps to store or back up your files or data over the Internet. The storage of digital information as fully accessible on the network in daily use.







Optical Disc Drive :-

        An optical disc drive is a disk drive that uses laser beams or electromagnetic waves near the light spectrum as part of retrieving or storing data on optical discs like CDs and DVDs.

Solid-State Storage :-

        A solid-state storage is a nonvolatile, removable storage medium that employs integrated circuits rather than optical media or magnetic media. It is memory component with no moving parts, typically built around a kind of semiconductor circuit.

Input and Output

Ergonomic Keyboard :-

        An ergonomic keyboard is a computer keyboard was designed to absolve stress that continual typing causes on the hands, wrists, and fingers. Some ergonomic keyboards have a fixed layout, while others are able to be moved. There are many types of ergonomic keyboards such as, the split keyboard, the contoured keyboard and the angled split keyboard.

Ergonomic keyboard

Ink-jet printer :-

        An ink-jet printer is a type of printer that reproduces an image by propelling droplets of liquid material onto paper. It is the most commonly used printer.

Laser printer :-

        A laser printer is a printer which utilizes a laser beam or light to form dot-matrix patterns and an electrostatic process to fuse metallic particles to paper. It produces good quality material.

Magnetic-Ink Character Recognition :-

       Magnetic-Ink Character Recognition is abbreviated as MICR. It is a connection recognition technology system that uses special ink and characters which can be magnetized and read automatically. It is often used by the banking industry to assist in the processing of cheques.

Optical-Character Recognition :-

        Optical-Character Recognition is abbreviated to OCR. It is an automatic conversion of scanned images of handwritten, typewritten or printed text into computer text. It is through means of an optical scanner and specialized software.

Optical-Mark Recognition :-

        Optical-Mark Recognition, which is also called Optical Mark Reading or OMR, is the process of electronically extracting intended data from marked fields. It gathers data with an optical scanner by measuring the reflection of light at prearranged position on a surface.