Electronic Paper Technology

Unlike LCD, LED, or CRT display system, electronic paper technology attempts to achieve the clarity, contrast, and ease of viewing of normal paper on an electronic display.

The technology behind electronic paper is thirty years old; it was developed at Xerox PARC (Palo Alto Research Center). Nicholas K. Sheridon of Xerox PARC created a new display technology known as Gyricon (Greek for ‘rotating image’), which became the basis of the modern e-paper technology.

The ideal modern electronic paper should have high contrast like normal paper and low power consumption; it should be thin and light as well. The electronic paper display (EPD) is so light that it can be folded or curled, while still retaining the image. Also, the EPD should not lose the image even if power supply is not available. These concepts were used in the production of such products as Fabric PC from Fujitsu, which is a … Read the rest

LED Screen

  • Size: do you need a Smart car or a BMW X5 (i.e. what are the dimensions of the LED screen you want to install?)
  • Power: do you want to drive it at race circuits or you need it just to do the grocery? (i.e. what’s the resolution of the LED screen?). Note for beginners: resolution = distance between the pixels: the closer they are, the better is the image at shorter viewing distances.
  • Reliability: premium car brands use premium materials and are therefore able to provide longer warranties (i.e. so do LED screens’ manufactures)
  • Credentials: how much do you value the world-class service provided by Toyota? (i.e. beware of newly established Asian companies without a proven technology and history)
  • Training: BMW gives a 2 days safe-drive course to any Customer that purchases the new sport series. (i.e. beware of LED screen manufactures that offer no or minimum training on how
Read the rest

Compare Laptops

Today’s laptop market offers a wide selection of laptops with different features. With so many options, buyers are advised to carefully evaluate their needs and compare features of different laptops before purchasing them. Processor speed is one of the key factors for the comparison of laptops. It determines the speed at which the laptop can retrieve data and information. The lower the speed the cheaper the laptop is. System memory is another significant factor to be considered while comparing laptops. System memory is essential for operating multiple functions simultaneously. 128Mb and 256Mb are sufficient for normal operations. If the user needs to perform complex and multiple functions, 512Mb is recommended. The hard drive stores files, data, documents, and other information on the laptop. 10GB to 20GB hard drives are sufficient for laptops. The optical drive refers to external storage readers and can be a CD-ROM, CD-RW, or DVD-ROM or RW … Read the rest

Electronic Waste is Dangerous

Many nations that have enacted laws about electronic waste to help try and keep it out of their landfills or to have them taken to a landfill that is equipped to handle material that is toxic. In electronic waste, also shortened to e-waste, the heavy metals like mercury, lead, and cadmium do pose serious health and environmental risks. Many consumers have been trained to know that cathode ray tubes are dangerous and require special disposal but are not trained to connect cell phones with beryllium. This is heavy metal that is toxic enough that it can cause severe damage to your lungs.

In addition to all of the toxins that electronic waste in the landfill it can also take a very long time to bio-grade, which means that e-waste will be taking up space in a landfill for centuries. What to do with electronic waste is a serious problem. Many … Read the rest

Using Electronics at Sea

When it comes to transducers on fishing electronics, there are single frequency transducers and dual frequency transducers. Single frequency transducers are used for lakes, while dual frequency is used when you are fishing in deep water. In deep water, the higher frequency transducer on a dual transducer fish finder is the one that shows all the fish.

You can also get display screens on marine electronics with many different resolutions. Of course, the higher the resolution, the better the image. Color screens are better viewed in direct sunlight. The overall size of the monitor may be anywhere from four to seven inches, measured on the diagonal. Generally, the more power your fishing electronics come with, the better are the results, even in still or shallow water. Depth penetration is related to the quality and the power of the transducer. Better transducers penetrate the water best. Saltwater and muddy water will … Read the rest

Local Area Network

LAN are typically used in a small area, say, a building or an office complex. The need for LANs really cropped when PCs appeared on the computing scene. A point to be noted before we discuss anything more is that there are many different versions of LAN being sold in the market by many different vendors. Most. LANs support live or more terminals. There are LANs which support even one hundred terminals. The figure shows several terminals attached to the file server. In many networks these terminals, can be either dumb or intelligent. A dumb terminal is nothing but a keyboard and monitor and a small interface unit which links it to the host computer.

The user siding at the dumb terminal can access the host, but since the terminal does not have- a hard disk or a floppy disk drive he has to store all his data on the … Read the rest

Recycling Printer Cartridges

Certain companies specialize in the recycling of printer cartridges once they have been disposed. They provide an incentive for the printer cartridges offered for recycling. It is a process that disposes of unwanted goods and helps to reduce the burden on natural resources. Inkjet and laser printer cartridge recycling minimizes the quantity of garbage in landfills. Since some of the components in a printer cartridge are non-degradable, it is best to recycle these products. The proceeds received from giving unwanted printer cartridges can be donated to various institutions for the benefits of charity.

The avenues for recycling printer cartridges are large, and they do good business. Most organizations dispose of used cartridges that add to the garbage build up. An easier solution is to approach the proper recycling companies and deliver the cartridges to them for recycling. The Internet is a good source to find the recyclers. These companies gather … Read the rest

Clean Laptop Touchpad

We will be speaking today about this laptops that have a touchpad as their pointing device and most of all, we will be speaking about how to clean the laptops’ touchpad. Cleaning your laptop touchpads improves the quality of the motion and response of the touchpad.

Because touchpads are sealed, you will not need to worry about dirt or dust entering your laptop. Instead yourself as a constant user will probably make your touchpad dirty. Yes, even if you may not be aware and as clean as you may be, your fingers are actually greasy. This grease, while working with your laptops’ touchpad gets on it making it more difficult to use after a period of time.

So, once in a while you have to clean the laptop touchpad. This can be easily done with a damp cloth with a bit of 50% solution of isopropyl alcohol.Or use a small … Read the rest

Refilling Ink Cartridges

The new cartridge is much smaller now this changes things a lot with regard to refilling. The problem is that the entire sponge must be filled with ink in order to hold the recommended amount of ink. This is hard to achieve for the amateur because of air in the sponge.

The professional filler fills the cartridge under a high vacuum this removes the air and then the ink is injected. Only after the sponge is filled completely is air let back into the cartridge. This works very well and if the empty is a good one it almost always results in a working cartridge. Now we are talking about the small cartridges produced in the last 2 or 3 years. That is like the small the HP 56 and 57and The Lexmark 16 and 26.

So what can you do to increase your chances of success? First thing is … Read the rest

Flash Drives

So where should you buy a Flash Drive? What should you use it for? What size Flash Drive should you buy? What precautions should you take in using a Flash Drive? These topics and more are covered in this article.

Flash Drives can be used to back up files created on nearly any computer that has a USB port. This is especially useful if you are using a program such as Microsoft Word at a public library or a university. Flash Drives are also useful for ordinary tasks such as copying files between two computers in your home, or your computer and a friend’s computer. While you can also accomplish these tasks using CD or CD rewrite media, flash is often more convenient and easier to use.

Flash Drives can also hold large amounts of mp3 or picture files. For example, a 1 GB Flash Drive can hold 16 hours … Read the rest