A wireless home alarm system is a home alarm system in which the various components of the system are connected without the use of wires and do not require hard-wiring to function. Both hard-wired and wireless home alarm systems generally work in the same way and consist of similar components. There is a main console … Read more
Much like the game hide-and-seek, geocaching is a game in which people search for something hidden. Participants usually hide a small, waterproof container that contains a few small trinkets and a log with a pencil in a remote location. They then record its coordinates with a Global Positioning System (GPS) device. This code is then … Read more
A public address amplifier raises the volume of speech so people can be heard clearly in a large area or throughout a building. Inputs feed from one or more microphones through the device, which increases the power of the signal. The amplifier pushes the signal to outputs which relay the speech through speakers or horns, … Read more
A cable surge protector is a device intended for use between electrical and cable outlets and the devices plugged into them. One end of the device plugs into a wall outlet, often with a coaxial cable running from a wall outlet to the surge protector, and then other devices can plug into the surge protector. … Read more
There still exists much confusion about the way to buy digital TV since this may mean a few different things. Digital TV can refer to type of television set, the way it receives pictures, and the picture quality on the television. Alternately, people may want to know how they can receive digital TV broadcasting signals … Read more
Adaptive Multi-Rate (AMR) audio codec and Waveform (WAV) audio file format are two types of audio files that are used by different applications and devices. AMR audio files are commonly used by mobile phone handsets for recording and encoding speech, as well as for encoding ringtones. It is a patented audio format, and licenses to … Read more
A dual Subscriber Identity Module (SIM) Global System for Mobile communications (GSM) phone is a wireless phone that allows its owner to simultaneously use two SIM cards. This type of phone allows users to associate two separate numbers with a single device. Dual SIM GSM phones can be considered standby dual SIM phones or active … Read more
A triband world phone is a mobile phone that is able to work internationally because it has the technology to support phone calls on multiple frequencies. This term is used to refer to phones that use the global system for mobile communications (GSM) standard. GSM is used in most countries, with the notable exceptions of … Read more
As more radio stations across the world begin playing music in the HD Radio™ format, the demand for quality HD Radio™ tuners will continue to grow. Choosing the right HD Radio™ tuner is important to ensure that you get the best possible quality from your listening experience. To begin your search for the perfect HD … Read more
Television is a key element in many homes. While a great number of people subscribe to cable or satellite TV, many still watch local signals using an antenna on the roof or a smaller version that is connected directly to the television set. A two-pronged set antenna is often referred to as “rabbit ears” and … Read more
Bible PDA software is Christian-based software that is designed to function with a personal data assistant, or PDA. The content of the software usually involves one or more popular versions of the Old and New Testaments, the sacred writings that have the status of Scripture with Christians of all denominations. Software packages of this type … Read more
A valve amplifier, or amp, is also called a tube amplifier due to the use of vacuum tubes to power it. The vacuum tube was originally produced in the 1930s and powered early telephone systems, computers and radar systems in World War II. The powerful tube was first used in a musical application when 1950s … Read more
Histogram matching converts the histogram, the profile of light and dark elements, in a target image to that of a reference image. It is used in image processing to adjust one or more images for better clarity, quality, or other traits. Computer programs can perform this procedure automatically when directed to do so by the … Read more
An LCD TV is a flat panel digital television that uses Liquid Crystal Display (LCD) technology verses the competing plasma technology or the older cathode ray tube (CRT) technology. LCD is also used in computer displays, and an LCD TV is simply a larger monitor with a built-in TV tuner, or with the ability to … Read more
There are quite a few different types of night vision spy camera, which are often categorized based on the way in which they are meant to be used and the technology used in them. Personal spy cameras are devices that can be concealed on the body of a person, and one with night vision will … Read more
3G phones are mobile telephony devices that operate on the 3G network. These mobile receivers and transmitters are more expensive than earlier models of cellular phones and cannot operate on either a 1G or 2G network. Cellular phones were originally introduced in the 1980s when the Advanced Mobile Phone Service network was launched. This was … Read more
A prepaid smartphone is a smartphone devise that has a cellular prepaid plan. These plans allow wireless phone subscribers to pay for service as they use it, without any long-term commitments. Smart phone devices are cellular phones that have advanced features, such as Internet and e-mail capabilities that are typically found on personal digital assistants … Read more
Pay as you go wireless services are cell phone services where the consumer purchases air time minutes and other cellular options in advance. Going with a prepayment service plan of this type eliminates the need for entering a long term contract with the service provider, and also ensures that the consumer only pays for the … Read more
Kiosk systems are small, freestanding enclosures that are usually designed to provide information, products, or services to consumers. Typically, kiosk design entails having an open side of the enclosure or a window cut out so that transactions can be conducted. For example, newspapers or cigarettes are often sold on the street in small kiosks. In … Read more
A weatherproof socket it a receptive connector, typically for electrical current, that has been specially modified for outdoor use. A receptive connector is a connector into which another cord can be plugged. Ordinarily, anyone exposing a powered electrical socket to water risks creating an electrical short circuit, which can be very dangerous. By using a … Read more