USB (Universal Serial Bus)


Short for Universal Serial Bus, USB  is a plug and play interface that allows a computer to communicate with peripheral and other devices. USB - connected devices cover a broad range; anything from keyboards and mice, to music players and flash drives. USB may also be used to send power to certain devices, such as smartphones and tablets, as well as charge their batteries. The Universal Serial Bus industry standard was established in 1995, and then quickly adopted by Intel, Compaq, Microsoft and other companies.

Where are the USB ports ?
All modern computers have at least one USB port, below are the typical locations you can find a USB port on a computer.


  •           Desktop computer - A desktop computer usually has two to four ports in the front and two to eight   ports in the back.
  •           Laptop computer - A laptop computer has between one and four ports on the left, right, or both sides of the laptop.
  •            Tablet computer - If a tablet has a USB port it is usually the same port as the charging port. A few laptops may have an additional port and if it is available it is on one of the sides of the tablet.
  •           Smartphone - Not many smartphones have a USB port, but many use a USB port to charge the phone that can be used as a USB port when not being charged.

USB transfer speeds

  • USB 1.x, is an external bus standard that supports data transfer rates of 12 Mbps and is capable of supporting up to 127 peripheral devices. The picture shows an example of a USB cable being connected into the USB port.
  • USB 2.0, also known as Hi-speed USB, was developed by Compaq, Hewlett Packard, Intel, Lucent, Microsoft, NEC and Phillips and was introduced in 2001. Hi-speed USB is capable of supporting a transfer rate of up to 480 megabits per second (Mbps), or 60 megabytes per second (Mbps), and is backwards compatible, meaning it is capable of supporting USB 1.0 and 1.1 devices and cables.
  • USB 3.0, also known as Super Speed USB, was first made available in November 2009 by Buffalo Technology, but the first certified devices weren't available until January 2010. USB 3.0 improved upon the USB 2.0 technology with speed and performance increases, improved power management and increased bandwidth capability (providing two unidirectional data paths for receiving and sending data at the same time). USB 3.0 supports transfer rates up to 5.0 gigabits per second (Gbps), or 640 megabytes per second (Mbps), and following the release of USB 3.1, has been renamed to USB 3.1 Gen1 (for marketing purposes). The first certified devices included motherboards fromASUS and Gigabyte Technology. Dell began including USB 3.0 ports in their Inspiron and Dell XPS series of computers in April 2011.
  • USB 3.1, also known as Super Speed +, was made available as of July 31, 2013 and is the latest version of the USB protocol. USB 3.1 is capable of transfer rates of up to 10 Gbps, putting it in line with the first generation of Apple's Thunderbolt channel. Today, many devices use the USB 3.0 and 3.1 revisions for improved performance and speed.
  • USB Type-C was developed around the same time as USB 3.1 and is a reversible-plug, 24-pin, double-sided connector for use with USB devices.

USB Connector Variations

USB connectors come in many shapes and sizes as there are many different devices that utilize them. Every version of USB connector including standard, Mini, and Micro have two or more variations of connectors.

USB cables - Length and Type

USB cables are available in multiple lengths, from around 3 feet to just over 16 feet in length. The maximum length of a USB cable is 16 feet 5 inches (5 meters) for high-speed devices and 9 feet 10 inches (3 meters) for low-speed devices. These maximum lengths are due to data transfer timing and the risk of data loss if using longer cable lengths. However, by using USB hubs, you can connect two USB cables together to effectively extend the distance between the two devices being connected.
There are different types of USB cables as well. As mentioned above, there are different transfer speeds (2.0 and 3.0) for USB. Similarly, there are different types of USB cables to match with those speeds. You can get a USB 2.0 cable for use with a device using USB 2.0 or a USB 3.0 cable for use with a device using USB 3.0.
There are also USB extension cables that can connect to one end of a USB cable (typically the end that would connect to the computer) to extend the length of the cable. However, you should still avoid extending the cable beyond the 16 feet 5 inches total maximum length limit, unless using a USB hub to connect another USB cable.

USB Devices

Today, there are millions of different USB devices that can be connected to your computer. Below are just a few of the most common USB devices you'll likely find and use.


  •          Digital Camera
  •          External drive
  •          iPod or other MP3 player
  •          Keyboard
  •          Keypad
  •          Microphone
  •          Mouse
  •          Printer
  •          Joystick
  •          Jump drive aka Thumb drive
  •          Scanner
  •          Smartphone
  •     Tablet
  •         Webcams



Tugas Softskill Bahasa Inggris 2


Forest In The Middle City


      Mangrove forests Pantai Indah Kapuk (PIK) into a cool area that is now being busy discussed. You certainly don't  think so if Jakarta have a forest between the buildings. But it wasn't indiscriminate forest because the forest is so comfortable to visit, and offers a beautiful natural atmosphere as there are lots of mangrove trees. So you don't need to go far 'flee' to another island to calm down.
 

MANGROVE FOREST LOCATION
 

      Mangrove Forest  located at Jalan Pantai Indah Utara I Penjaringan and can be reached from many directions. You can also use your vehicles or public transportation. If you happen to ride your own car, you can follow the route: From toll Soekarno-Hatta – exit toll towards Pantai Indah Kapuk - the road continues to the intersection of Grand Cengkareng - turn right - intersection - turn right - the location of ecotourism Jalan Pantai Indah Utara I Penjaringan on the right road (20 meters).
      If you use public transportation, you can take the route: Busway corridor 9 - shelter Pluit - motorcycle/bajaj - Ecotourism Mangrove Sedyatmo Toll PIK. You can choose other alternatives: Busway corridor 9 - shelter Grogol - public transportation B01 - Muara Karang crossroad – pick public transportation U11 - Ecotourism Mangrove Sedyatmo toll. Then the enterance ticket is Rp.25.000-,

TIME TO ENJOY MANGROVE FOREST


      Mangrove forests PIK also known as Natural Park (TWA) Angke Kapuk indeed be the right choice for you who want to enjoy the breeze in the middle of the mangrove forest with the atmosphere so neat and modern. This region has an area of about 99 hectares where 40 percent of the land is used for mangrove forests. Not only used as a resist abrasion from the fierce waves of the sea, mangrove forests PIK also has the function of recreation for the citizens of Jakarta to get fresh air and parse tired after work. And because the atmosphere was so beautiful, don't be surprised when it was time to Mangrove PIK you going to meet a couple who are conducting pre-wedding photo session. The atmosphere was very supportive. There are many activities you can do in Mangrove Forest PIK. Well if you happen to like photography with a natural feel, in fact this place is perfect really. But, you will not be freely because in Mangrove Forest PIK no restrictions that must be obeyed by all visitors. So do not be shocked yes when asked to pay a fine Rp.1.000.000-, cause bring a DSLR camera or digital camera. It is rather abusive anyway. On the front, in the vicinity of the entrance had been marked prohibition of carrying a camera. Therefore, you should obey. But don't run out of sense because you can still use the phone and tongsis. Easy and practical, right? You can get beautiful photos in Mangrove Forest PIK.

If you want to observe birds in Mangrove Forest PIK also quite popular. You can climb a tower to see the white birds fluttering and sometimes stopped around the mangrove forest. Because of mangrove forest, so don't be surprised if the meeting lizards. You should be grateful because the animal doesn't appear at any moment. Mangrove forest ecosystems in PIK is suitable for those animals. I think that enough reviews for Mangrove Forest PIK, hope you can come here and don't forget to keep clean this awsome place. See you ...