Data and MP3 Compression: Understanding "Digital" by Matthew Bredel
The MP3 and MP4 generation was generated mostly due to advances in data compression. Let us first take a step back and focus on digital music. There are two types of data in the world: Analog and Digital data. Analog data is real time data, and it is essentially how we perceive the world. ... At this point, you can record the distance two ways: 1) You can mark the ruler with a pencil and store it in its true "analog" value 2) You can round the value to the nearest 1/16th and record it. ... These media will product static and noise and will degrade over time.

Wireless Networks by Elizabeth Morgan
The information age has been revolutionized not just by the power of computers to process data, but also by the power of communication amongst computers. This communication is responsible for the proliferation of computer networks. Sharing of information, sharing of resources (both software and... Wireless communication technologies used in wireless networks include analog cellular, digital cellular, Cellular Digital Packet Data (CDPD), mobile radio networks, personal communication services (PCS), satellite, microwave systems and local multipoint distribution systems (LMDS).

History of the Computer; Analog or Digital? by Tony Stockill
In 'History of the Computer - the emergence of Electronics', we saw how the development of Radar during the second world war led to an understanding of pulse technology. At the same time methods were refined for the calculations required for the ballistic trajectories. ... A computer can also be analog or digital, though the digital type have vastly outgrown the analog. ... The big advantage of a digital recording and reproduction system (amplifiers etc are also digital) is that, due to the nature of the high frequency pulses, it is possible to copy them exactly when transferring from one...

Data Acquisition - Product Reviews by Michael Russell
Generally data acquisition means to acquire data. However, in computer terminology, data acquisition is defined as the process of uniting real world data to produce the data to be maneuvered by the computer system. The data is in the form of waveforms or signals. ... The "Plug and Play" feature automatically assigns I/O address and provides powerful and easy to use configuration utility. ... The PCI board provides 32 single ended or 16 differential inputs along with 16 digital input and 16 digital output channels.

Computer Sound System Basics by Jim Lotter
If you love to listen to music while you work on your computer, then you should check out the newest computer sound systems. Computer sound systems deliver realistic sound reproduction and excellent bass for most listeners needs. Here's some tips on purchasing a great computer sound system. ... If you are looking for a basic two speaker system or a speaker and bass woofer system, you can find a computer sound system easily and inexpensively. ... Basically sound cards function to convert digital signals into analog, and vice-versa in some cases.

How IP-based Video Surveillance Works -- Way Beyond Analog by Lucy P. Roberts
When you’re shopping around for an IP-based video surveillance system, you will need to be particularly cautious about what exactly you’re looking at and what the individual terms mean. How IP-based video surveillance works is open to interpretation as far as some video surveillance and security... Comparing analog and IP-based video surveillance A better way to understand the differences between analog and IP-based video surveillance may be to compare the two and how they work: Analog or CCTV+DVR video surveillance • Easy to use -- operates like a VCR • Changing cassettes...

What is a Video Server? by Wes Fernley
With the convergence of IP Network Video into CCTV (Closed Circuit Television), many are looking to convert their existing CCTV surveillance system into an IP Network Video system. Is this possible? How can it be done? Video Servers have been created to do just that. ... Well in basic terms, a Video Server is a device that can convert an analog signal from an Analog CCTV Surveillance Camera into a digital format similar to IP Network Cameras. ... If anyone is thinking of upgrading their current surveillance system, I would highly suggest integrating Video Servers into your current...

All-seeing Eye: The History of Video Surveillance by Nahshon Roberts
There are eyes everywhere, and they do not belong to humans. In today's fast-paced modern world, video surveillance has become as essential to society as security guards and gateways. Mention video surveillance and the average Joe will instantly associate the term with video cameras mounted in... Digital Multiplexing and Subsequent Developments One drawback to analog technology was that users had to change the tapes daily. ... Digital multiplexer units had features like time-lapse and motion-only recording, which saved a great deal of tape space.

Telephone Plug Adapters by John Dulaney
There are no worldwide standard for telephone jacks. The North American RJ-11 pattern is used in over 100 countries through-out the world and if you are traveling to China, Greece or Vietnam, you will have no trouble plugging in your laptop modem, where-as, you will find that plugging-in is... All of these ATAs provide you with connectivity between the telephone system and your computer or a network, with some of these performing analog to digital converstions and connects you to VoIP server, while others use software to do one or both of the tasks.

Time For A New Television? by Julia Hall
The Super Bowl is on the horizon; the playoffs are in full swing, and what better time than now to look at some of the new big screen televisions that are on the market now to complement your satellite dish subscription? If those big Plasma televisions are too much for your budget right now, you... It also has some high end features such as HD-component video and HDMI inputs, a great SRS surround system, 30 watt sound system and a velocity san modulation. ... I appreciate the Cable Card expansion for standard and HD cable signals, and a progressive scan line doubler for of analog video...