Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points that do not use an electrical conductor as a medium by which to perform the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth or as far as millions of […]
A low-power wide-area network (LPWAN) or low-power wide-area (LPWA) network or low-power network (LPN) is a type of wireless telecommunication wide area network designed to allow long-range communications at a low bit rate among things (connected objects), such as sensors operated on a battery. The low power, low bit rate and intended use distinguish this type of network from a wireless WAN that is designed to connect users or businesses, and carry
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LoRa (Long Range) is a proprietary low-power wide-area network modulation technique. It is based on spread-spectrum modulation techniques derived from chirp spread spectrum (CSS) technology. It was developed by Cycleo of Grenoble, France and acquired by Semtech, the founding member of the LoRa Alliance; it is patented.
A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations automatically. Modern computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. A computer system is a “complete” computer that includes the hardware, operating system (main software), and peripheral equipment needed and used for “full” operation. This term may also refer to a group of
The bitcoin network is a peer-to-peer payment network that operates on a cryptographic protocol. Users send and receive bitcoins, the units of currency, by broadcasting digitally signed messages to the network using bitcoin cryptocurrency wallet software. Transactions are recorded into a distributed, replicated public database known as the blockchain, with consensus achieved by a proof-of-work system called mining. Satoshi Nakamoto, the designer of bitcoin, claimed that design and coding of bitcoin began
Rafidain Bank (Arabic: مصرف الرافدين) is the largest bank in Iraq, with 165 branches inside Iraq and with branches in Cairo, Beirut, Abu Dhabi, Bahrain, Sana’a, Amman and Jabal Amman. Its HQ is in central Baghdad. The bank was established in 1941 and in the 1960s in a wave of Ba’ath nationalisation became a state
Power engineering, also called power systems engineering, is a subfield of electrical engineering that deals with the generation, transmission, distribution, and utilization of electric power, and the electrical apparatus connected to such systems. Although much of the field is concerned with the problems of three-phase AC power – the standard for large-scale power transmission and distribution across the modern
Power system protection is a branch of electrical power engineering that deals with the protection of electrical power systems from faults through the disconnection of faulted parts from the rest of the electrical network. The objective of a protection scheme is to keep the power system stable by isolating only the components that are under fault, whilst leaving as much of
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Canada is a nation located in North America. Its 10 provinces and three territories stretch from the Atlantic to the Pacific and northward into the Arctic Ocean, totaling 9.98 million square kilometers (3.85 million square miles), making it the world’s second-largest country in terms of total area. Its southern and western border with the United
Bitcoin (₿) is a decentralized digital currency that does not have a central bank or a single administrator and may be transmitted from user to user on the peer-to-peer bitcoin network without the use of middlemen. Transactions are confirmed by network nodes using encryption and stored in a blockchain, which is a public distributed ledger.