Computer Forensics is the scientific study of computers or computer related data in relation to an investigation by a law enforcement agency for use in a court of law. While this technology may be as old as computers themselves, the advances in technology are constantly revising this science.

In the technological old days, computer forensics was mostly related to data dumps, printing out every keystroke that had been logged on a computer in a series of eight digits, all of them zeroes and ones. Literally cases of paper would be used for the printing of the materials. Systems analysts would then have to convert all of the data into hex and then translate the value into whatever the actual keystroke was. In this way, it was possible to go over all of the data and figure out at what point the computer and the corresponding program crashed. Like computers and technology, Computer forensics has evolved by leaps and bounds since those days of old.  Read more...

Automated selective soldering is the fastest growing area within electronic assembly due to the ever increasing pressure to improve product quality and shorten cycle times in the manufacturing process.
With more complex, double-sided surface mount assemblies, the use of the traditional wave soldering process to solder through-hole components is no longer an option.

The higher density and lower ultimate cost of SMT makes it the preferred assembly technology. However, the mechanical strength of through-hole connections continues to make through-hole the technology of choice in assembling connectors.
As the number of through-hole components on boards has decreased, hand soldering is primarily used as an alternative. Hand soldering is a manual operation and, therefore prone to defects, such as excessive solder, inadequate hole fill, flux residues and thermal stresses at the solder joints. It is not reliable or repeatable and depends entirely on ability and skills of the operator.
Selective soldering is the process whereby specific through-hole devices on a board are selectively soldered using programmable selective soldering machines.  Read more...

Satellites have been orbiting the earth for several decades now, and are constantly contributing to the evolution of global communication.
Satellite cell phones have made it possible for people to make phone calls from anywhere in the world, no matter how remote their location, and have been extremely useful in coordination of many activities ranging from scientific exploration to military operations.

Portable satellite radio is another important technology that has emerged in recent years, allowing users to subscribe to and access radio channels from around the world for either entertainment or informational purposes.
One small problem with satellite communication technology, however, is the sheer distance involved in communicating with orbiting satellites, which can cause a slight delay in transmission time. This, of course, is of no consequence to satellite radio, but it can be a slight problem for two-way communication services such as broadband and phone.

The only way to reduce the time delay involved in satellite transmission is to use lower orbits for satellites, thus reducing the distance involved in transmission. Lower orbits are already being used for some purposes, but there are many challenges that must be overcome in order to make such a transition.
Advancements in satellite technology have been plentiful in the past few years, and more are expected in the future. It will be very interesting to watch the development of this evolving technology over the coming years and beyond.

Projection screens are special screens used to project an image for the audience. Movie theatres use projection screens on a wide scale. These screens are used in conferences or home theatres as well. The screens serve different purposes in different places. Therefore they are installed in various ways.

The projection screens can be wall-mounted type, pull down type or mobile type. Wall mounted types are needed for exact reproduction of the picture. Movie halls and home theatres use this type of screen. The second type, that is pull down screens do not need a fixed place, they can be used as and when required. Mobile screens are pull down screens mounted on a free stand but the projection of pictures are not perfect in these projection screens.

Projection screens are always matte white or matte grey. This helps in the perfect colour projection of the slides, otherwise, the pictures or images might get discoloured. Matte grey screens or grey screens reflect less light from the projector, they also absorb less light from the room. Image brightness ratio is correctly maintained and many call these projection screens high contrast screens.  Read more...

Technology – The times are certainly changing and it seems each day something new arrives to intrigue us. Recently we’ve been hearing all about DivX, but what is DivX?

DivX is a digital video codec compression decompression format that is based on the technology of MPEG-4. These files can be downloaded over a high speed connection very quickly without sacrificing the quality of the digital video; so it is an excellent choice for exchanging video files over the Internet.

DivX was originally developed for DVD encoding because of its high quality at such a low bit rate (650 mb=90 min at 640×480 standard bitrate). It was once thought it could be used to create an alternative to video rentals. However it lived a short life expectancy in the DVD world; instead becoming a popular Internet video tool.

The DivX player is a downloadable program that lets you download multiple videos. You can pause and resume the downloads at any time and easily add URLs. You can organize your video collections so they are easy to access and you can quickly drag and drop, then burn your multiple DivX videos to a CD or DVD.  Read more...

Ever wondered how the high speed paper shredder you saw in your office worked? Or the industrial paper shredders at your factory? Ever marveled at its ability to take in large volumes of paper, oceans of information and effortlessly turn it into meaningless bits and pieces of paper scrap which have lost all ability to convey any information. And that these bits and pieces of paper scrap are what guarantees the security of your precious information, ensuring it doesn’t fall into the wrong hands and cause irrevocable damage. So how do these paper shredders really work? What keeps them going?

Papers shredders are typically manufactured in two standard configurations depending on the mechanical operation with which they cut the documents. The first type of paper shredder is the strip cut paper shredder and like the name suggests it reduces input paper into strips of finely cut paper. A single sheet of paper fed into the average sized paper shredder will be decimated into probably 15-20 strips of cut paper. This type of paper shredders have a series of parallel serrated blades mounted on a steel frame and cut the paper sequentially in a periodic motion as the paper moves on the rollers inside the paper shredder. Several industrial paper shredders manufacturers employ this type of shredding for their high speed high volume throughput paper shredders.  Read more...

Navigating the Internet has become an overwhelming task for many people. The number of Web sites has increased exponentially during the past several years, giving consumers an endless amount of options. While performing everyday tasks online generally saves people time, getting to the right sites and sorting through search engine results often takes too much time.

Consumer surveys and focus groups show that consumers are becoming increasingly comfortable with using the Internet for daily tasks such as banking and shopping. However, those surveys also reveal that consumers are frustrated with the amount of time it takes them to navigate the Web and want to simplify their online experience.

Here are a few expert tips for reducing your time spent online:

• Automatic bill payments-Certain bills, such as the mortgage, car payments and cable/ satellite TV service, are for the same amount each month. By setting it up with your bank or the utility service itself, you can have the bill paid electronically each month, for one less bill you have to worry about each month.  Read more...

The computer design could be discussed for hours – it is almost the same as talking about art. Throughout history, the mankind has sought for a diversity of the surroundings. It is a commendable zeal, I hasten to say. So, with the advent of home and office computers, a new problem appeared. Your may not believe but it concerns the design of computer case.

In the late 20th century, the computer case represented a uniform gray box with a monitor over it like some leader bust. This can not go on forever… and modding appears to help those who are unsatisfied. Modding is a vocation of home masters who can keep an instrument in the hands and who got tired of beloved computer serial design.

Modders, this is what modding-lovers are called, are actively introducing new self-designed and homemade computer cases, invent new technologies and approaches to make their unique home computers so that they will stand out from the crowd and enjoy possessing an exclusive computer with heretofore unseen features, forms, etc., i.e. a real modding thing.  Read more...

Point of Sale hardware, the till at a shop check out, has become very complex over the past ten years. Modern POS hardware includes the cash till, bar-code readers, scales, belts, communications system and modem.

When there is an electricity supply cut, large stores have little option about closing. It is not as simple as adding up the items in a basket with a calculator. The POS till includes inventory control, deducting items from stock as they are sold. The inventory count would be totally messed up if items were sold without going through the software inventory deduction procedures.

The POS hardware can be loaded with a range of retailer POS software solutions. These software programs allow stock to be deducted by items purchased, vastly improving stock control. Improved stock control means lower stock costs, less space required and improved profits.

Buying patterns can be analyzed simply and Customer Loyalty programs implemented if the right POS software is installed. Ordering can be automated and management much better informed regarding the performance of particular lines or departments.  Read more...

Why tempt fate ?

Summer weather can not only zap your newer computer systems but also your vintage computer as well as irrereplaceable vintage computer software as well as the time and energy spent in setup, hardware replacement and running computer systems.

Why does the summer season bring so much trouble – brownouts, sags and electric currents spikes?

Summer heat does wonders. Not only does it allow you to acquire a lovely tan but if causes utility grids to be strained beyond their capacity due to the increased use of air conditioners. In such cases power utilities adjust their voltage output, sometimes causing erratic power sags and spikes, which are extremely dangerous for computer hardware as well as software. And you can expect utilities to be more conservative to avoid another outage like that which happened in the hot August summer of 2003.

On Aug 14, 2003 it was estimated that due to a summer electric heat surge 50 million people and businesses were plunged into the dark and heat.

The summary cost was an estimated $ 6 billion.

Similarly it is estimated that in the United States that smaller outages cost the U.S. economy in lost productivity the not unsubstantial cost of $ 50 billion.  Read more...