In the late 1930s, Claude Shannon showed that by using switches which that close for "true" and open for "false," it was possible to carry out logical operations by assigning the number 1 to "true" and 0 for "false." This information ... Read more
What is office automation? Office suite tools What is office automation? The term office automation refers to all tools and methods that are applied to office activities which make it possible to process written, visual, and sound data in ... Read more
System disk A system disk, also sometimes called a boot disk, is a disk that will allow you to start a computer when the operating system no longer responds, as the result of a virus for example. This disk contains special information that ... Read more
The "Web," short for "World Wide Web" (which gives us the acronym www), is the name for one of the ways that the internet lets people browse documents connected by hypertext links. The concept of the Web was perfected at CERN (Conseil ... Read more
Representing a number in a computer Representing (or encoding) a number means to express it in binary form. Representing numbers in a computer is necessary in order for it to be able to store and manipulate them. However, the problem is ... Read more
How Bluetooth works Communication principle Establishing connections Bluetooth profiles How Bluetooth works The Bluetooth standard, like WiFi, uses the FHSS technique (Frequency-Hopping Spread Spectrum), which involves splitting the ... Read more
On May 15, 1973, the NBS (National Bureau of Standards, now called NIST (National Institute of Standards and Technology) published a request in the Federal Register for an encryption algorithm that would meet the following criteria: have a ... Read more
Introduction to Wi-Fi (802.11) The IEEE 802.11 specification (ISO/IEC 8802-11) is an international standard describing the characteristics of a wireless local area network (WLAN). The name Wi-Fi (short for "Wireless Fidelity", sometimes ... Read more
Connectors In information science, connectors, normally called "input-output connectors" (or I/O for short), are interfaces for linking devices by using cables. They generally have a male end with pins protruding from it. This plug is ... Read more
Introduction to Client/Server Architecture Numerous applications run in a client/server environment, this means that client computers (computers forming part of the network) contact a server, generally a very powerful computer in terms of ... Read more
History of Windows Windows is the operating system sold by the Seattle-based company Microsoft. Microsoft, originally christened "Traf-O-Data" in 1972, was renamed "Micro-soft" in November 1975, then "Microsoft" on November 26, 1976. ... Read more
What is WiMAX ? WiMAX is short for Worldwide Interoperability for Microwave Access. It is a metropolitan wireless standard created by the companies Intel and Alvarion in 2002 and ratified by the IEEE (Institute of Electrical and ... Read more
Printers Characteristics Daisy Wheel Printer Dot-Matrix Printer Inkjet Printer and Bubble Jet Printer Laser Printer LED Printer Printer Command Language Print Servers Printers The printer is a peripheral that allows you to make a print-out ... Read more
Wireless Metropolitan Area Networks (WMAN) A Wireless Metropolitan Area Network (WMAN) is also known as a Wireless Local Loop (WLL). WMANs are based on the IEEE 802.16 standard. Wireless local loop can reach effective transfer speeds of 1 ... Read more
Excel Introduction Microsoft Excel is the spreadsheet in the Microsoft Office office suite. To start it, simply click on the appropriate icon in the Start menu (in Windows) or click on an Excel file (that has an .xls file extension). A ... Read more
ccmexec - ccmexec.exe The process ccmexec.exe (Microsoft SMS Agent Host ) is part of the Microsoft SMS (Systems Management Server) suite, which is mainly used to distribute software patches to the machines on a network. The file that ... Read more
The Concept of a Function Spreadsheets generally have a large number of integrated functions for processing data. There are hundreds, categorised as follows: Arithmetic functions that offer basic tools to process numerical data Statistical ... Read more
