Computer and Internet

Website

a location connected to the Internet that maintains one or more pages on the World Wide Web.

BUS

n computer architecture, a bus[1] (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols.[2] Early computer buses were parallel electrical wires with multiple connections, but the term is now used for any physical arrangement that provides the same logical function as a parallel electrical bus. Modern computer buses can use both parallel and bit serial connections, and can be wired in either a multidrop (electrical parallel) or daisy chain topology, or connected by switched hubs, as in the case of USB.

Wi-Fi

a facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area.

URL

the address of a World Wide Web page.

3G and 4G

3G and 4G Explained. First things first, the "G" stands for a generation of mobile technology, installed in phones and on cellular networks. Each "G" generally requires you to get a new phone, and for networks to make expensive upgrades. The first two were analog cell phones (1G) and digital phones (2G).

Web Browser

A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URI/URL) that may be a web page, image, video or other piece of content.

ISP

An Internet service provider (ISP) is an organization that provides services for accessing and using the Internet. Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.

Address Bus

An address bus is a computer bus architecture used to transfer data between devices that are identified by the hardware address of the physical memory (the physical address), which is stored in the form of binary numbers to enable the data bus to access memory storage.

Arithmetic Logic Unit (ALU)

An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. It represents the fundamental building block of the central processing unit (CPU) of a computer. Modern CPUs contain very powerful and complex ALUs

DSL

DSL (Digital Subscriber Line) is a technology for bringing high- bandwidth information to homes and small businesses over ordinary copper telephone lines. xDSL refers to different variations of DSL, such as ADSL, HDSL, and RADSL.

Satellite

Definition of: satellite computer. satellite computer. A computer located remotely from the host computer or under the control of the host. It can function as a slave to the master computer or perform offline tasks.

Read-Only Memory (ROM)

Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile.

Memory Unit (MU)

Primary storage, or memory, means the space on your hard drive that is briefly used for working space. This usually occurs in a chip. Memory consists of four types of memory chips RAM, ROM, CMOS and flash. RAM stand for random access memory and ROM stand for read only memory.these are also called primary memory of a computer.

RAM

RAM is a high-speed memory. When you load a program, or open a document, that program or document is read from your hard drive and stored in RAM so your CPU can execute the program's instructions, or manipulate the document, very quickly. RAM is orders of magnitude faster than any hard drive.

Output Unit (OU)

The OU (Output Unit) command directs output from the specified task or tasks to a specified output device or to any available device of the specified type. Sometimes you can use the OU MT form of the command to respond to a MT <unit number> RECOPY REQUIRED <filename> RSVP message issued by library maintenance.

Control Unit (CU)

The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices on how to respond to a program's instructions.

Cable

The definition of cable means a rope-like bunch of wires used to connect two things. The cord that connects your phone to the wall socket is an example of a cable. The connection between your computer and your internet service provider is an example of a cable.

Input Unit (IU)

The input unit of the computer system is used for feeding data and instructions to the computer. These data and instructions given to the computer are called as input and the devices used for giving input are called input unit or devices. A computer consists of an I/O system. It is used by a person to communicate with a computer. For instance, a keyboard or a mouse may be an input device for a computer, while monitors and printers are considered output devices for a computer. In computer architecture, the combination of the CPU and main memory is considered the brain of a computer, and from that point of view any transfer of information from or to that combination is considered I/O. Hence, the devices that are used to input data to the computer are called input unit or devices. The input devices of computer are keyboard, mouse, MICR, OCR, scanner, joystick, trackball etc.

Control Bus

The internal bus, also known as internal data bus, memory bus, system bus or Front-Side-Bus, connects all the internal components of a computer, such as CPU and memory, to the motherboard. Internal data buses are also referred to as a local bus, because they are intended to connect to local devices.

Data Bus

The internal bus, also known as internal data bus, memory bus, system bus or Front-Side-Bus, connects all the internal components of a computer, such as CPU and memory, to the motherboard. Internal data buses are also referred to as a local bus, because they are intended to connect to local devices.

Hyperlinks

a link from a hypertext file or document to another location or file, typically activated by clicking on a highlighted word or image on the screen.

Modem

a combined device for modulation and demodulation, for example, between the digital data of a computer and the analog signal of a telephone line.

Router

a power tool with a shaped cutter, used in carpentry for making grooves for joints, decorative moldings, etc.

dial-up

access a computer system or service remotely via a telephone line.