Sabtu, 29 November 2014

3G Network

3G networks (English: 3rd-generation), is the use of supports high-speed data transmission of cellular mobile communication technology of the third generation mobile communication technology made ​​of lines and equipment laying communications network.3G network multimedia communication means such as wireless communications and the Internet combined with the new generation of mobile communication systems.

3g Network - What is the 3G network? 

3G: Third-generation mobile communication technology (English: 3rd-generation), refers to support high-speed data transmission cellular mobile communications technology. 3G services can simultaneously transmit voice (call) and data information (e-mail, instant messaging, etc.). Representative feature is to provide high-speed data services. 
3G is the 3rd Generation English acronym refers to the third generation mobile communication technology. Relative to the first generation 
analogue phones (1G) and second-generation GSM, CDMA and other digital mobile phone (2G), third generation mobile phone (3G) Generally speaking, refers to the generation of the wireless communications and multimedia communications with the Internet The mobile communication system. 
The main difference between 2G and 3G is to enhance the speed voice and data transmission, which is better able to achieve in the global wireless roaming, and process images, music, video streaming and other forms of media, including web browsing, conference calls, e-commerce and other information services, taking into account also the good compatibility with the existing second-generation systems. To provide this service, the wireless network must be able to support different data transfer speeds, ie indoor, outdoor and vehicular environments can support at least 2Mbps (megabits / second), 384kbps ( 
kilobits / second) and 144kbps transmission rate (this value may vary depending on the network environment). 3G is a third generation communication network, currently does not support network other than GSM and CDMA, GSM equipment uses a frequency division multiple access, and code division CDMA using a spread spectrum technique, advanced power and voice activation may be provided at least 3 times greater than GSM network capacity, the industry will be 3G CDMA technology as a mainstream technology, the ITU identified three wireless interface standards are CDMA2000, WCDMA, TD-SCDMA, ie domestic CDMA network can smooth the transition to 3G, 3G is the main feature can provide mobile broadband multimedia services.

Selasa, 25 November 2014

Group's Work



How CDs work?
Optical disc is a medium customarily used for storing various types of video files, music, data and more. optical disc is less developed in terms of quality and capacity. Optical Discs has four types they are CD, DVD, HD-DVD, Blu Ray. In each of these types has a different quality and capacity, but has the same function as the storage medium.
The advantages of storing data / files on the types of CDs because the price is much cheaper and also the data will not be stored exposed to the virus may be damaged or deleted manually because the data store is Read-Only and can only be removed using certain applications such as Nero, Ashampoo Burning studios, and other similar applications.
How does the CD / DVD drive to read the data on optical discs?
A CD / DVD Drive when going to read an optical disc (optical disc) be it CD, DVD, Blue-Ray, and similar by using a laser with a lower intensity and will be directed to the disk surface. When the laser beam to reach a pit that is bouncing back with a lower intensity than when directing the laser on the land. Thus it is better if an optical disc is scratched or exposed to light either sunlight or artificial light is too bright and berlibihan the optical disc that contains data belonging to you will not be able to read properly and may be lost. Here we will try to explain about the difference between CD, DVD, Blue-Ray / HD.

  A. CD (Compact Disk)
Type optical disc CD is a first generation that replaces / shift the existence of diskette (floppy disk) at the time, because the optical disc CD has a data storage capacity larger than a diskette, while in terms of price is not much different. Optical disc CD ordinary and widely used to store movies / small resolution video, music video clips, software / applications and other important data that will be used for various kinds of purposes, since at the time of first use of the Internet is still not widely used because of the price internet service is not affordable for most people / groups.
An optical disc CD has a storage capacity that is equal to 700 MB of data, the optical disc CD Develop a single layer using a red laser technology with a wavelength of 780 nm (nanometers), whereas its own data storage location (layer) on the top of the optical disc CD , so if the top (the label of the brand CD) is damaged or scratched, the CD will not be in use again, as well as the bottom if dirty much covered dirt or scratches so much red laser optics will be difficult to read the data that requires a long process to read , you should first clean with a soft cloth that is not scratched the surface of the CD before use. CD disc itself there are two types of CD-R (CD-Read) that can only be used to read the data, CD-RW (CD-Rewriteable) that CD rewritable data using applications such as Nero and Ashampoo burning.

  B. DVD (Digital Versatile Disc)
DVD is an optical disc second generation of optical disc that has a larger capacity 7 times that of a CD. In each DVD has a total capacity of data storage media of 4.7 GB for single-layer DVDs, this DVD can play various types of video or film types with a screen resolution of 720x480 pixels, and therefore no wonder that today the whole movie there are at present using the media as a medium for play movies, because they were cheaper and also more economical than having to buy 7 disc CD with the capacity to rival the size of the existing storage capacity of a DVD.
DVD is use red laser technology with a wavelength of 635-650 nm (nano meters), while the location of data storage media (layer) is in the middle of a DVD disc, so that the data will be safe from damage to the disk, but you should avoid the bottom from dirty or exposed to light / excessive light. Just as on an optical disc CD if you violate the terms of the optical disc DVD will be difficult to read the data and files that have been burned. DVD discs also have a greater capacity that the size of the data storage of 8 GB, these discs usually consists of a Dual-Layer. Variants of DVD disc is same as CD that composed of DVD-R (DVD-Read) and DVD-RW (DVD-Rewriteable).

  C. Blu-Ray Disc and HD-DVD (High Definition DVD)
Blu-Ray and HD-DVD are two optical storage disc technology that offers a new high definition TV (HDTV high definition television), meaning that the quality of video and film display that can display better than the DVD. In a DVD optical discs can support display resolutions up to 720x480 pixels, but HDTV (High Definition Television) can run videos with resolutions as high as 1920x1080 pixels.
Blu-Ray and HD-DVD itself utilizes laser light purple - blue for reading and writing data on the optical disc. This laser has a smaller wavelength that is 405 nm (nanometers) than a red laser used in DVD and CD discs that can provide a recording density (recording) higher. An optical disc Blu-ray Disc has a storage capacity of 25 GB of data on a single layer, while HD-DVD has a storage capacity of 15 GB single layer of data. The location / area for data storage layer on the Blu-Ray is located on the bottom, while the HD-DVD discs area / data storage layer is located at the center as well as on a DVD.

Sabtu, 15 November 2014

DIODA (DIODE)

What is diode?

Diode is an active electronic component that function for conduct electric current to one way and  inhibit the flow of electricity from the opposite direction. There are two electrodes of diode named anode and cathode.

Based diodes function consists of:

1. Diodes Rectifier or Diodes Ordinary
    Diodes Rectifier is generally made of silicon that function as a rectifier alternating current (AC) to
    direct current (DC).

2. Zener diode (Zener Diode)
   Zener diode serves as a safety circuit after the voltage is determined by the Zener diode
   That voltage is called the Zener voltage.

3. LED (Light Emitting Diode) or Light Emission Diode 
    LED is a diode that can emit monochromatic light.

4. Photo Diodes (Photo Diode)  
    Photo Diodes is sensitive to the light-emitting diode that is often used as a sensor.

5. Schottky diodes (SCR or Silicon Control Rectifier
    SCR is a diode duty as a controller.

6. Diode Laser (Laser Diode)
    Diode laser can radiate light emitting diode laser. Laser diodes are often abbreviated with LD.

Picture and Symbol of Diode:
Jenis-jenis Dioda

Minggu, 09 November 2014

Synopsis



THE LEAGUE OF EXTRAORDINARY GENTLEMEN
Started from a criminal that named Fantom. He tried to make Allan’s team fight with him. Finally Allan made treaty with Mr. M that convince him in Kenya. Initially Allan’s team composed of Skinner, Mina, and Nemo. They went to the Dorian’s house to recruit him as a team but suddenly Fantom’s team attack them . They fought. And then they met Tom Sawyer and he followed Allan and the team.
After that they went to the France. They catched Proffesor Jekyll in there. In the trip, there were so many problems started from love problem, the ship was broken, backbitter, etc. Start from here, they found strange thing in this team. Suddenly Skinner lost. Finally, they found the real backbitter in this team. And the bickbitter is Mr. M that took Allan’s team DNA and Dorian that just want to be younger than before that cooperated with Fantom.
They attacked Fantom’s factory. One by one of Fantom’s hostages were free. In the war, Allan was died because of Fantom. And Fantom was died because of Sawyer.

Protagonis Characters:
1

1      Allan Quatermain 
       He is the hero from England that operated in South American. He is the best shooter in this team, he  can shoots the object from long distance. He is a wise and patient person. He is the leader of this team because he is the oldest and the has leadership character.
 
2      Tom Sawyer
Tom is a secret agen from American to help Allan and the team. He can shoot object as well as Allah. He  ois like children for Allan. Tom is an imroper boy.

3      Captain Nemo
Captain Nemo is the capten of the famous ship which named Nautilus. He’s come from Indian. He can restrains the ship well and used the sword very well. He is a religious and nimble person. 

Mina Harker
She is the beautiful vampire. She can changes herself to  be bat so she can flies. She can sucks human blood. Mina is the sweet girl, beautiful girl, and a smart girl.

Rodney Skinner
Rodney Skinner is the invisible man. Peoles cannot see him face to face so thats why he can attacks the criminals on the quiet. He is humorous.

Antagonist Characters:
Fantom 
He has so many techonology modern and smart. But he is a greedy man and always wanted to ridden the world.

Dorian Gray
Dorian Gray is an immortal man. He can changes hisself to be younger than before with a painting. He is a backbiter in this team.

Mr.M.
Mr. M is the antagonist character in this movie. He can makes a big drama in this movie.