A rectifier changes alternating current into direct current. This process is called rectification. The three main types of rectifier are the half-wave, full-wave, and bridge. A rectifier is the opposite of an inverter, which changes direct current into alternating current. Half-Wave Rectifier The simplest type is the half-wave rectifier, which can be made with just …
Free VoIP calls are never completely free of cost. Often, the goal is not to achieve completely free calls to all destinations, but to use the VoIP operator that suits one’s needs best. Keeping that in mind, one will learn that most VoIP companies let users talk for free in their own network, but will …
GIMP GIMP is the GNU Image Manipulation Program. GIMP is a free and open source program for tasks such as photo retouching, image composition, and image authoring. It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image …
A plasma cutter is a device that directs an ionized gas at an object under extreme temperatures. Plasma cutters are often used for industrial purposes, such as cutting metal, and are dependent on plasma, an extremely hot state of matter. Plasma cutters are essentially a type of plasma torch meant for cutting metal rather than …
Before GPS started being deployed in the majority of mobile devices sold on the market, the only method available to track a cell phone was triangulating the cell phone’s position using one of several techniques available to law enforcement and other governmental agencies. Today, most cell phone tracking applications work by accessing the GPS location …
Mondex is a specific smart card which was developed by England’s National Westminster Bank in 1990. Its design was intended to serve as electronic cash or a virtual electronic wallet. Any amount of money can be transferred to the Mondex smart card. MasterCard international bought controlling interest in the resulting firm, Mondex International, in 1997 …
A SIM (Subscriber Identity Module) card is a type of interface card that is found in most modern cell phones and contains the user’s account information as well as some types of media, such as contacts, pictures, and sometimes ringtones. A SIM card contains an ICCID, or Integrated Circuit Card ID, number that identifies the …
An air circulator is basically a fan. Although the term “air circulator” most often refers to an industrial fan that is used in a warehouse, factory, or office building, it can also refer to a regular household fan. Air circulators also refer to air conditioning units and other types of air cooling devices. They are …
One of the better functions of Microsoft Word is the ability to change the layout of the page so that you can create different sized documents. Making index cards in Microsoft Word is very easy and, if your printer is good, they will print and read very good. It is important, though, to get blank …
Traversing a Doubly Linked List A doubly linked list can be traversed either way and that too very conveniently. Inorder traversal Reverse order traversal Inorder Traversal To traverse the doubly linked list, we walk the list from the beginning, and process each element until we reach the last element. .cf { font-family: Lucida Console; font-size: …