This "mosquito ringtone" is the original "secret ringtone." A secret ringtone is any ringtone which is recorded above 15Khz. Most adults are unable to hear frequencies above 15Khz due to age-related hearling loss known as presbycusis. Because of this, secret ringtones such as the mosquito ringtone can usually only be heard by people up to their mid twenties. This sound was originally developed by Howard Stapleton of Compound Security Systems as a way to prevent young people from loitering around businesses. That product was named the Mosquito, because the sound Read More

When looking at a microwave, one of the things they often times see is a metal rack in there which causes confusion. However, people have always been taught that putting metal in the microwave is incredibly dangerous and can destroy the microwave. The question that they ask, then, is: why can't I put aluminum foil, for example, into the microwave, but I can have a metal rack? The answer lies in the way the atoms of metal work and how a microwave works. A microwave heats up what is put Read More

Trendnet advertises itself as an Ethernet based device manufacturer, but also boasts a large collection of wireless devices as well. Trendnet routers often include dual antennas for maximum coverage, four Ethernet ports, and advanced WPA encryption. Trendnet devices tend to be small, lightweight, and stylish, allowing users to set them up and forget about them. Trendnet Default Password All Trendnet devices are equipped with a control panel that allows the user to make changes to the device’s settings and configure it to work with other computers and devices throughout his/her Read More

FCC ID stands for Federal Communications Commission Identification. An FCC ID is the number found in all computer hardware components. FCC ID numbers, usually found on the circuit boards, are helpful in finding information about the manufacturers of the hardware devices. An FCC ID has 2 elements. The first is a three-character Grantee Code which usually begins with an alphabetic character and does not contain 1s or 0s. The FCC permanently assigns this code to a company for authorization of radio frequency equipment. It represents the Grantee or Applicant and Read More

PPPoA (Point-to-Point Protocol over ATM) is a network protocol that encloses PPP frames into AAL5 and is primarily used with DSL and DOCSIS Internet providers. The PPPoA standard offers classic PPP features, including compression, encryption, and authentication support. When used for encapsulation on ATM networks, the protocol can reduce overhead by just over 0.5% when compared to the PPPoE standard, while supporting the VC-MUX and LLC based encapsulation types. PPPoA and PPPoE: A Comparison Both PPPoE (Point to Point over Ethernet) and PPPoA allow an Internet Service Provider to provide Read More

Computer users place great demands on their computers and computing devices today more than ever before. The size and complexity of modern sophisticated computer applications the vast amounts of information that is being stored, shared, and utilized daily requires that large amounts of computer memory remain available so the computer can access and present data in an effective manner. Virtual memory is a rather ingenious method of harnessing the computer's actual memory capacity and manipulating it using a combination of the operating system and memory hardware capabilities. Data can be Read More

Isochronic tones are used in brain entrainment. When a single isochronic tone is repeated rapidly and a pause of silence follows each pulse, the brain produces a similar frequency. Isochronic tones can change a person’s mood, affect a person’s physical attributes, and produce effects such as lucid dreaming, out-of-body experiences, or hypnosis. Isochronic tones are similar to binaural and monaural beats but differ because they do not change. How Brain Entrainment Works Brain entrainment is a relatively new field of study that involves frequency production in the brain. When the Read More

On occasion, Facebook and other popular sites such as Orkut, YouTube, and Hulu may block users. Fortunately, users may use a proxy to unblock themselves. However, this may not work as Facebook and similar sites rely heavily on javascript for basic functionality. That is to say, although the user will be able to visit the site, using any web proxy without javascript enabled will not work. Therefore, Javascript enabled proxies may solve this problem. Many proxies do not support this, but those that do are not enabled by default. There Read More

Serial ATA is an enhancement to the ATA standard for for connecting storage to PC’s. All versions of ATA up until ATA-7 in 2004 utilized parallel transfer of data from the motherboard to the drive controller built onto the disk. The ATA-7 specification introduced Serial ATA. Serial ATA Standards The original Serial ATA standard offered miniminal improvement over the existing 133MBps bandwidth of the existing Parallel ATA standard. Serial ATA standards are constantly evolving to meet higher bandwidth requirements. Serial ATA Type Bandwith Bus Speed Signal Rate SATA-150 150MBps 1500MHz Read More

The cause of dreams is not known concretely. However, there are a series of theories that many psychologists present about the origin of dreams and, more importantly, the cause of them. Each theorist is unique and, until recently, few were based on science because there wasn't much neurological understanding. With the arrival of science, though, entirely different theories appeared about the different types of dreams. Freud on Dreams Sigmund Freud is known for saying that dreams were "the royal road to the unconscious." He felt that one could figure out Read More