WiBro (Wireless Broadband) is a portable Internet service (can be used anywhere)are emitted at a frequency of 2.3 gigahertz (GHz). WiBro enables broadband Internetaccess to a variety of devices including mobile phones, computers, notebooks,PDAs, and others. In terms of mobility, WiBro also considered more efficient andeffective than the now standard WiFi wireless internet. WiFi coverage is still limited toroughly within a radius of up to 100 meters, while Wibro claimed to be accessible to within 1 kilometer from the transmitter station. It is remarkable advances in technologythis time?
Access is also called WiBro is still acceptable in the vehicle speed 60 kilometers perhour. WiBro was developed by a large company named Samsung along withElectronics and Technology Research Institute (ETRI) and has received certificationfrom the WiMAX Forum. This technology is capable of transmitting data at speeds up to 50 Mbps. Data transfer speeds are able to surpass the speed of HSDPA data transfer platform that has the ability to send data to 14 Mbps.
WiBro is a further development of Korean-made technology standard calledhigh-speed portable internet (HPI). The developers include Corps KT, SK Telecom,and Electronic & Telecommunications Research Institute. Now HPI technologystandards are deemed to include one of the global technical standards given the HPIuses 802.16e standard from the Institute of Electrical and Electronics Engineers(IEEE).
If this blog contains things felt good, please you know other people. If it is less interesting this blog or are still many shortcomings please let me know. Hopefully that is in it can be beneficial to us all.
Rabu, 23 Maret 2011
Web OS
Web Operating System is an equation of the operating system, but with the capabilityprovided in the programming model Asynchronus JavaScript and XML data (AJAX)allows us to create a web application where the web is capable of processing only certain objects and let objects do not participate in the process into the web process(such as regular web). In this case that is described is a web operating system calledGlide Web Operating System which is made by a developer named Transmedia. This service can be accessed by other computers (either notebook or PC), we also can access via mobile phones such as iPhones and PDAs that use a web browserapplication. This service has a Glide Write for word processing. In making the presentation, this service has a Glide Presenter. This service also provides a GlideWeb Publishing, which serves to create a web page. In this service facilities to editpictures online using PhotoEdit. And many other interesting applications.
Senin, 21 Maret 2011
TCP/IP
Transmission Control Protocol / Internetworking Protocol (TCP / IP) is a protocol that describes how all the transmissions that can be done via the Internet.
The basic concept addressing format of TCP / IP using a protocol called IP which has a length of 32 characters which are divided into 2 fields, namely netid and hostid;where netid is the network where the host is connected and the hostid is a uniqueidentifier for each host on a network. IP addresses are written as 4 where thenumerical value in a single numerical value, there are 8-bit binary number.
In the IP addressing class, divided into five classes where the class A of 0.0.0.0 - 127 255 255 255; Class B between 128.0.0.0 - 191 255 255 255; Class C between192.0.0.0 - 223 255 255 255; Class D between 224.0.0.0 - 239 255 255 255; Class Ebetween 240.0.0.0 - 255 255 255 255; To get the address previously used in thecalculation of binary numbers. For more details can be seen below table:
So little that I can share with and hopefully can be useful for friends as well. If there is a problem please share so that the problem can be solved together.
Compression
compression aims to condense data so that data obtained will be smaller than its capacity so it does not need to require a large storage space. Lots of data can becompressed, such as images, documents, videos, and others. From the material Ilearned there are two kinds of compression techniques, the lossless compression andlossy compression.
1. Lossless compression
The original data obtained from lossless compression cans be recovered from itscompressed data
e.g. Huffman Coding
2. Lossy compression
Compressed data of lossy compression can not be recovered to the original data.
e.g. JPEG (still images), MPEG (video / motion image)
Minggu, 20 Maret 2011
ASCII Code
ASCII is a continuation of the American Standard Code for Information Interchange isan international standard that consists of letters and symbols such as hexadecimalnumbers and ASCII unicode but more universal. ASCII code used in computers in particular, so that each translation language requiring translation into ASCII numbers in advance and then change again to form another. ASCII code is actually a binary number consisting of 8 bits which started from 0000 0000 to 1111 1111 where forbinary numbers consisting only of numbers 0 and 1. Usually we are not able tomemorize the ASCII code of the need to write or scribble in order to be translated. So that we can interpret quickly the need for assistance in the form of an ASCII table.Therefore, I will share with the ASCII table to you all so friends can use it either to studyor to work.
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