Tag Archives: GPS

Understanding The Function Of Usb Cables

Universal Serial Bus (USB) is the most popular interface in electronics for establishing communication between computers and external devices such as printers and cameras among many others. While some devices such as flash drives can plug directly into a USB port, many others depend on a USB cable to connect to computers.

USB 2.0 Cables

An upgrade of the original USB interface, 2.0 was released in 2000 and is the most common version in use today. USB 2.0 cable has the capability to transfer 480 megabits of information per second (mpbs); a data rate 40 faster than the previous version. Cameras, scanners and portable music players are some of the many electronic devices in which USB 2.0 cables are used to connect to computers.

USB to Serial Adapters

Due to worldwide use of the interface, most devices are now manufactured with USB-compatibility. However, devices such as some GPS navigation systems, sensors and loggers still rely on the use of Serial RS-232 ports. To connect to these devices, it is necessary to use a USB to serial adapter.

Before purchasing a USB to serial adapter, it is important to make sure it is compatible with your computer’s operating system. Most adapters are compatible with Windows 95, 98, 2000 and XP, but not all work with Windows Vista and Windows 7. Attempting to use a USB to serial adapter that is incompatible with your operating system can cause your computer to freeze up.

Additionally, a reliable USB adapter should:

Have a data transfer rate capability of over 500 kilobytes per second.

Provide 96 byte buffer for upstream and downstream data flow.

Offer remote support for computer performance features such as wake-up and power management.

Be compatible for use with cell phones, personal digital assistants (PDAs) digital cameras and modems.

Be free of issues that can interrupt request (IRQ) conflicts.

USB 3.0 Cable

USB 3.0 is a faster version of the interface that was released in 2010. USB 3.0 cables have a five Gigabyte per second (gbps) transfer rate, which allows files to be uploaded to computers dramatically faster than through 2.0.

USB 3.0 cables are also much more efficient with power supply management. This feature is especially beneficial for devices such as portable hard drives that require additional power from a second USB port.

Physically, USB 3.0 cable is a lot thicker than 2.0 cables due to the addition of five lines that allow for the faster transfer rate. Despite the physical differences of the new version, 3.0 cables are compatible with 2.0 ports, eliminating the need to purchase an adaptor.

This is just an overview of the capabilities provided by the most popular USB cables available on the market today. If there is uncertainty as to which cable would work for your situation, it’s best to consult a supplier of computer, networking and audio visual cables.

Huawei U8150 – The First Android 2.2 Smartphone Review

Huawei U8150 (maybe also marked as Huawei IDEOS) – as the first Android 2.2 Smartphone of China is now available for all over the world at a great cost-effective price. Maybe it is also the first smartphone that used Android 2.2 operation system on the world.

The price of this phone seems very cheap, but its hardware configuration is not unequivocal at all.This U8150 quipped with 2.8 inches (320×240 pixel resolution), TFT material capacitance screen, processor frequency 528MHz, camera is reached 3.2 million pixels. And memory is 256 RAM / 512 ROM. Moreover it also supports the practical functions such as bluetooth, HSDPA, GPS and WIFI. And there are yellow, red, blue and black four kind colors back covers for users to changes.

Huawei U8150 Basic Parameters:
Modem: U8150
Frequency band: GSM 850/900/1800/1900,WCDMA 2100MHz
Screen size: 2.8 inch
Screen parameters: 240 * 320 pixels (QVGA), touch screen
CPU: 528MHz
Memory capacity: 256MB RAM,512MB ROM
System: Android,2.2
Standard configuration: lithium battery, specifications, charger
Back cover color: black, red, blue, yellow

Phone at a glance:

Basic functions:
3G Capability
Built-in Wi-Fi Capability
Email and Instant Messaging
Browse the Web (web-surfing capability )
MP3 Player
Camera
Built-in GPS
Quad-band

Data application functions:
Bluetooth: support
Data service: GPRS, EDGE, HSDPA
JAVA: support
USB Type: USB 2.0
WiFi(WLAN): support

Photograph function:
Camera: Built-in camera
Cameras pixels: 3.2 million pixels
Sensor type: CMOS sensor
Photo quality: up support 20481536 pixel photos
Video shooting: support audio video shooting

Multimedia entertainment function:
Ebooks: supports 3GP, MP4
MP3 Player: supports MP3 play, supports MIDI, MP3, AAC and so other formats
Video playback: Supports video playback
Flash playback: supports Flash Player 10.1