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Tuesday, November 29, 2011
Friday, November 25, 2011
Types of Tablet PCs
A cheap tablet PC is one of the most popular gadgets in the technologically advanced world of today. One of the main reasons for this is the broad spectrum of users it is great for. From students and lecturers to medical professionals and business people, the tablet pC in its different types and forms is used widely. Tablet PCs have gained massive popularity since their inception and to satisfy specific needs and preferences these are available in a range of types.
Broadly speaking, a cheap tablet PC comes in two types; slate and convertible. The slate type is a classical representation of the purpose of the tablet PC. It is basically a high technology flat computer screen which can be placed on the desk. Manipulation on the screen is done by using an electronic pen called a stylus instead of the conventional keyboard and mouse. The slate can practically be used as a piece of paper (a very high tech one) on which you can scribble your notes and more on. Furthermore, a keyboard and other accessories can be purchased separately and attached to it.
The second type of tablet is the convertible which essentially works and looks like a laptop. It is has a screen that can be flipped open and manipulation is done via the keyboard and touch pad which come attached to it in addition to a CD Rom and more. The screen can be swiveled around one hundred and eighty degrees and put down over the keyboard to use it like the slate type and operate it with the stylus.
Tablet PCs are also classified on the basis of their technological features such as screen size, connectivity, pressure sensitivity, size and of course, brands. The choice of which model is the best for you depends on your personal preference and your specific needs and demands. The screen size is directly analogous to the drawing and writing space the tablet will offer you. You may find different types of tablets with sizes such as eight inches by six inches, nine inches by twelve inches and larger.
Another important way to classify the types of tablet PCs in the market is their pressure sensitivity. Higher the sensitivity, more accurately will your writing and drawing be registered and saved. There are numerous different pressure sensitivity levels in these handy tools, the highest and best being 1024 pressure levels.
The various types of tablet PCs also further illustrates the purpose of its creation; to cater for the technological working needs of a broader spectrum of people.
Monday, November 21, 2011
Laser Printer Cartridges
The advancements in printing have been numerous throughout many years. The laser printer was invented in 1969 at Xerox by a researcher named Gary Starkweather. He had an improved and functional printer working and printing around 1972. The idea came about by modifying an existing xerographic copier. Starkweather disabled the imaging system, created a spinning drum with 8 mirrored sides and focused a laser on the drum. Light from the laser bounced off the spinning drum, sweeping across the page as it traveled through the copier. The hardware was completed rather quickly but the software and control interface took much longer. The first laser printer was the IBM 3800 in 1976, typically used for high volume printing like invoices and mailing labels. It was a very large device but can be accurately named the beginning of laser printers.
The cartridges in most of these printers are usually quite easy to replace. The laser printer cartridge is meant to make things much easier and allow for quick replacement and overall efficiency for the printers they come in. The only issue is, they are usually quite pricey and you are stuck buying the same brand that printer was made by. The laser printer cartridge is not interchangeable, in most cases if you have an HP printer, you'll need an HP printer cartridge.
The difference between ink cartridges and the laser cartridge is in the material used. InkJet printers use liquid while the toner cartridge used in a laser printer is powder. Manufacturers use various polymers and formulas to produce a slab of toner, then pelletize or break it and turn it into a fine powder. The advantage in using toner ink cartridges is the much more extensive use you get out of laser printers and toner itself over liquid ink.
The most popular brands of laser printers are in my opinion, HP, Brother, Lexmark, Dell and Canon.
Laser Printer Cartridge for HP 2300 Series, 6000 page yield (ELI75100) - Designed to be fast reliable and support high volume printing. Ensures crisp, sharp results every time for professional users.
Brother TN460 High Yield Toner Cartridge - Compatible with Brother HL-1240/1250/1270N, Fax-4750/5750. And MFC-8300/8500/8600/8700/P2500 printers. Yields around 6,000 pages. Quality printing on a variety of papers and stocks. Works with combination laser and LED copy/scan printers
Lexmark C5220KS Return program laser toner - For Lexmark C522/C524/C30/C532/C534. Around 4,000 pages
Dell 310-6640 Remanufactured/Compatible Black Toner Cartridge - 3/pack value bundle for Dell 1100, 1110, 2,000 page yield Replaces part numbers -3106640, C502, J9833. Compatible cartridge w/chip. Guaranteed to meet or exceed page yield of OEM
Canon 104 Black Toner Cartridge - Single cartridge system includes toner, drum and development. Compact and easy to install. 2,000 page yield. Maintenance free performance. Designed for use with ImageClass MF4150 and FaxPhone L120
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