Posted by: pcpart
in Science & Techno on May 23, 2012
HP CQ43-308TX laptop is an entry-level laptops, the aircraft shape design is simple and neat, and overall fashion sense.
In appearance, HP CQ43-308TX notebook make use of composite materials mold. Body with elegant titanium gray design, quite strong sense of science and technology. Screen with 14 inch LED backlit display, screen resolution 1366 * 768, pre-loaded with a gold screen ratio of 16:9, showing very good results.
Posted by: strontiumtech
in Science & Techno on May 22, 2012
Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication and power supply between computers and electronic devices. Also known as Hi-Speed USB, USB 2.0 is an external bus that supports data rates up to 480Mbps. USB 2.0 is an extension of USB 1.1. USB 2.0 is fully compatible with USB 1.1 and uses the same cables and connectors.
The USB 2.0 specification was released in April 2000 and was ratified by the USB Implementers Forum (USB-IF) at the end of 2001. Hewlett-Packard, Intel, Lucent Technologies, NEC and Philips jointly led the initiative to develop a higher data transfer rate, with the resulting specification achieving 480 Mbit/s, a fortyfold increase over the original USB 1.1 specification.
USB 2.0 has full forward and backward compatibility with original USB devices and works with cables and connectors made for original USB, too. USB 2.0 supports low-bandwidth devices such as keyboards and mice, as well as high-bandwidth ones like high-resolution webcams, scanners, printers and high-capacity storage systems. The deployment of USB 2.0 allowed PC industry leaders to forge ahead with the development of PC peripherals to complement existing high-performance PCs. In addition to improving functionality and encouraging innovation, USB 2.0 increases the productivity of user applications and allows the user to run multiple PC applications at once or several high-performance peripherals simultaneously.
USB 1.1 allowed a maximum transfer rate of 12Mbits/second. It is now obsolete, but both of its speeds (1.5Mbps & 12Mbps) are being adopted into USB 2.0, and they are now called Original USB officially. Almost every conceivable peripheral has USB 2.0 version ranging from a HDTV tuner, surround gaming headset, portable hard drive to even USB video card.Should you own a laptop, you may like to know that USB is also your ticket out of the proprietary world. It used to be that docking stations must all match that exact notebook model due to the proprietary connection. Now, you can just plug in a USB notebook dock, and you'll get a USB video adapter, hub, 7.1 surround audio, serial converters, Ethernet plus a notebook holder.
The host controller directs traffic flow to devices, so no USB device can transfer any data on the bus without an explicit request from the host controller. In USB 2.0, the host controller polls the bus for traffic, usually in a round-robin fashion. The throughput of each USB port is determined by the slower speed of either the USB port or the USB device connected to the port.
High-speed USB 2.0 hubs contain devices called transaction translators that convert between high-speed USB 2.0 buses and full and low speed buses. When a high-speed USB 2.0 hub is plugged into a high-speed USB host or hub, it will operate in high-speed mode. The USB hub will then either use one transaction translator per hub to create a full/low-speed bus that is routed to all full and low speed devices on the hub, or will use one transaction translator per port to create an isolated full/low-speed bus per port on the hub.
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Posted by: strontiumtech
in Science & Techno on May 22, 2012
Solid state drives are data storage devices that use solid-state memory to store persistent data with the intention of providing access in the same manner of a traditional hard disk drive. Since SSDs have no moving parts, they're more rugged and shock-resistant than standard hard drives, which make them perfect for laptops. But SSDs are more expensive than traditional HDDs.
Performing an upgrade to SSD drive is not that easy as buying a drive and inserting it in your Laptop. There are a few areas like picking out the right model, making sure that it will work with your setup, carefully cloning your old drive, and keeping the install process clean, which needs to be addressed well so that he upgrade process will be effective.
First of all, determine if your laptop is well suited for a solid state drives or not. Make sure your laptop’s BIOS support SSD and the OS is optimized for SSD. OS like Windows XP and older ones are not optimized for SSD and it is not a good idea to have SSD for them. Also ensure that your laptop can be physically upgraded, since some older laptops don't allow for easy upgrading of the hard drives.
If everything is ok and you have decided to upgrade, then choose the appropriate SSD from the wide array of SSDs available currently. If your laptop runs Windows Vista, make sure you've updated it to Service Pack 1. This will improve Vista's performance when running on the SSD. Windows 7 is still a better OS for SSDs, but Vista should work fine.Update your system BIOS. If your system is running in AHCI mode, try changing the BIOS storage access mode to IDE instead. Check your drive layout and leave the System Reserved and hidden restore partitions at their exact size, otherwise, the laptop might not boot properly.
Back up your data and check the drive capacities. You may be moving from a higher-capacity hard disk drive to a lower-capacity SSD. If your current drive exceeds what the SSD can hold, you'll need to ditch some of your data. Back the files up to an external flash drives or burn them to CD or DVD if you need the information.
Swapping out a laptop hard drive means that you somehow need to get the data off the old drive and onto the new one. You have several methods to choose from.
1. Get a small external hard-drive case with a USB interface. Install the new drive in the case, and then clone the old drive onto the new drive via USB.
2. Using a third, external drive, make an exact copy of the disk image on the old drive and copy it as a file to the external drive. Install the new drive and then reverse the process, copying the disk-image file from the external drive to the new drive.
3. Use an external device to make the drive clone and then after the cloning process is complete, swap in the new drive.
Once the cloning or data transfer is done, open up your laptop and replace the existing HDD with this SSD. Now your laptop has done an upgrade to SSD and it should be working fine.
Posted by: pcpart
in Science & Techno on May 22, 2012
ThinkPad X220-A51, a new mid-range business and also the family of dual-use laptop computers, the actual notebook employs classic dark-colored computer type, and all round to achieve the stability along with soft maintaining factors. The actual notebook using Intel Core i3-2350M brand, clocked had been 2. 3GHz along with 3M’s cache with Intel QM67 chipset. Simultaneously equipped with 2G DDR3 1333 recollection criteria and additionally 320G 5400 revoltions per minute harddrive, incorporated Intel HD 3000 visuals chip, support for that DX 10 consequences.
ThinkPad X220-A51 notebook computer runs on the regular style of old classic schokohäutige online business, matte structure from the shell with a fine look, your body angular, firm lines, the entire style can be restrained, exposing a strong atmosphere. Although it’s a organization style solutions, nevertheless due to the excellent functionality of the products its own matters, in other areas involving application form is quite on the trigger.
Posted by: pcpart
in Science & Techno on May 21, 2012
The brand new Inspiron 14z laptop optional diamond black or fire red colour of the roof, aluminum body, aluminum palm rest and Chiclet laptop keyboard; border on the screen for a one million-pixel high-definition webcam; appliance offers 2 USB 3.0 ports, one USB 2.0, an eSATA /Powershare combination port, a Kensington lock, Mini DisplayPort integrated network Interface 10/100 LAN (RJ45), 1 headphone / microphone combo ports, support SD, MS, MMC format 3 in 1 card reader; equipment together with the battery weighs 2.01 kg.
Configuration, Dell inspiron 14z (INS14ZD-128) Notebook computer along with the Intel Core i5-2430M processor, the Intel 6 series laptop motherboard chipset, Intel HD 3000 Core graphics; together with 4GB of DDR3-1333Mhz memory, 640GB 5400 rpm harddisk, 9.5 in. SATA bracket-loading DVD + /-RW, CD-ROM drive; Intel Centrino wireless-N 1030 with Bluetooth v3.0 + HS module; pre-installed Windows 7 Home Basic SP1 64-bit (Simplified Chinese), McAfee security Center (multiple languages) -15 January promotions
