battery operated lcd screen free sample

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1.Compare with Big Companies TCL/Hisense/JPE/ASANO/Expressluck...,We can do recycled LCD tv(15/17/19/22/24)for Middle -east market., but theycannot do it; We can mix A grade and recycled TV into one container for your valued customers, but they only can do New one.

2.Compare with some small factories who only can do recycled LCD tv,wealso cando A grade New panel LED TV with AC/DC,DVB-T2,DVB-T2/S2, Smart ..etc...We also have Test Equipments,Signal machines and QC Team to controlour tv quality, but those small factories only use a DVD to do test.

Equipped with a battery with a great performance, this battery-powered LCD screen is a symbol of the neo-generation of series of the LCD display panel. This battery-powered LCD screen is supported to standby for 10hours without a power supply. Two handles and 180° wheels design on the small body is a great advantage that has attracted a lot of attention from numerous users around the world.

All the functions mentioned not only provide the INDOOR PORTABLE KIOSK-PRK a longer performance period but also having the battery-powered LCD screen released from the limitation of location and the need for power supply.

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Batteries of the laptop are devices that enable a laptop to function without the main AC power supply. This working is supported for all laptop operations for anywhere between 1-4 hours depending upon the quality and the technology of the battery. A laptop like a desktop has CMOS & Clock Backup batteries which keeps u the date and the time when the laptop is turned off. This ensures that the restarted laptop carries on with the correct time and date. These are internal batteries of the laptop and these have another important function of saving the BIOS setup configuration, a program that is critically needed to reboot the system when restarted. Usually, the CMOS batteries are based on Lithium, Nickel Cadmium (NiCad) and alkaline technology and these are found fixed at one place on the motherboard. These batteries work with a current ranging between 3-7.2 volts.

Regarding the main laptop batteries, Wikipedia (2007) states as follows, “Laptops usually run on a single main battery or from an external AC/DC adapter which can charge the battery while also supplying power to the computer itself. Many computers also have a 3volt cell to run the clock and other processes in the event of a power failure [which confirms above narration]”. These main batteries have undergone rapid technology change and revolution over the years. Earlier alkaline, Lithium and NiCad batteries. While the former two were not chargeable and had to be replaced by equivalent new batteries; NiCad batteries were chargeable. An improvement over NiCad batteries came in the form of NiMH batteries (which was based on evolved and refined technology).NiMH batteries gave outputs of higher energy densities in comparison to NiCad batteries. For the same battery weight, a NiMH supplied twice the amount of power of a NiCad. This means that a leaner laptop can work for more hours with NiMH. NiMH batteries also do not have memory capture which means that NiMH clearly recognizes a full charge from a partial charge, unlike NiCads which were unable to distinguish this. Thus NiMH is more reliable and maintenance-easy. The latest development in battery technology is the Li-Ion battery technology. This has now become the benchmark battery technology. It has some advantages over the NiMH which the NiMH enjoyed over the NiCad batteries i.e. Li-Ion batteries have the same output as NiMH batteries but weigh nearly 35% less. This helps laptops turn leaner and less weight; in addition, Li-Ion batteries do not have any memory effect and are green products as they are not based on toxic chemicals such as Mercury or Cadmium. Random Access Memory (RAM) of some laptops are fitted with a backup battery which is a bridge or auxiliary battery. This makes the device switch on to such a battery in case the main battery fails. This helps the user with time to change the main battery as well as saves the settings and configuration. Frequently rechargeable NiCad or NiMH batteries are used as RAM backups.Smart batteries are equipped with chips that help them communicate with the laptop on battery performance, output voltage, temperature etc. These perform about 15% more than their non-smart counterparts. Kamal et al (2007) write about the latest development in battery technology, in a PowerPoint presentation at the Intel Development Forum, as follows, “High capacity battery technology has potential to High capacity battery technology has potential to support the vision of 8 hours of battery life-support the vision of 8 hours of battery life; fuel cell technology holds promise but vendors Fuel cell technology holds promise but vendors need to continue to pay attention to cost and form need to continue to pay attention to cost and form factor, and Intel AMPS allows support for new battery chemistries as well as fuel cells chemistries as well as fuel cells.”

The most critical power measurement used in relation to the laptop batteries is the Ah (Ampere hours) which can be then combined with the power consumption or power load of the laptop to calculate the run time of the battery. Several formulae have been devised to calculate such a run time. For instance, for a 12 v battery the following formula calculates the battery run time: (10 X (Battery capacity in Ampere hours))/ (Load Power in Watts)

Using the above formula one can calculate the run time of the chosen battery and go in for one or more batteries depending upon the requirements of computing. More battery cells simply augment the run time in any laptop as it improves the AH.

The laptop is critically dependent on the quality of its display and the capability of such a display to handle high-resolution graphics that are based on substantial data. The display technology also interacts strongly with the power consumption of the laptop and thus affects the backup time of the battery. Keeping these aspects in mind the laptop display technology stabilized around two main streams.Wikipedia(2007) explains the history and technicals as follows, “By about 1991, two new colour LCD technologies hit the mainstream market in a big way; Dual STN and TFT. The Dual STN screens solved many of the viewing problems of STN at a very affordable price and the TFT screens offered excellent viewing quality although initially at a steep price. DSTN continued to offer a significant cost advantage over TFT until the mid-90s before the cost delta dropped to the point that DSTN was no longer used in notebooks. Improvements in production technology meant displays became larger, sharper, had higher native resolutions, faster response time and could display colour with great accuracy, making them an acceptable substitute for a traditional CRT monitor”.

The screen resolution is decided by the number of pixels a particular display is capable of handling. As Wikipedia (2007-i) explains, “A pixel (short for picture element, using the common abbreviation “pix” for “picture”) is a single point in a graphic image. The intensity of each pixel is variable; in colour systems, each pixel has typically three or four dimensions of variability such as red, green, and blue, or cyan, magenta, yellow, and black….. A pixel is generally thought of as the smallest complete sample of an image. The more pixels used to represent an image, the closer the result can resemble the original. The number of pixels in an image is sometimes called the

Kamal Shah,Kevin Bosse ,K. Sugimoto,Bill Densham,Francis Nguyen, &.Ran Ghoman.(2007-i).LED As Laptop PC LCD Backlight: A Panel Discussion. Intel Development Forum.