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Mobile computing
Mobile computing
Mobile computing
Mobile computing
Mobile computing
Mobile computing
Mobile computing
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Mobile computing

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Untuk bahan rujukan kepada yang tengah membuat assignment ini

Untuk bahan rujukan kepada yang tengah membuat assignment ini

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  • 1. Title : The Latest Development In Networks And Communications Nama: Nur Najeeha Raihan Bt Hasri Class : 4 sciences 3 No I/c : Member group : Fatimah Aniqah Bt Ismail Nordiana Anastasia Bt Nordin 1
  • 2. 1.0 Introduction COMPUTER NETWORK A computer network is a system of interconnected computers and peripheral devices. For example, it may connect computers, printers, scanners and cameras. Using hardware and software, these interconnected computing devices can communicate with each other through defined rules of data communication. In a network, computers can exchange and share information and resources. A computer network may operate on wired connections or wireless connections. When two or more network are linked or connected and are able to communicate with one another using suitable hardware and software, it is called an internetwork. COMMUNICATIONS Communication is about the transfer of information from a sender, across a distance, to a receiver. Using electricity, radio waves or light, information and data in the form of codes are transmitted through a physical medium such as wire, cable or even the atmosphere. Therefore, in order to make communication possible from computers, across telephones and radios and back to computers and other digital devices again, there must be a signal translator, which we call a modem. The modem which is short for modulator or demodulator, converts digital signals into analog and back again into digital signals for information to move across the telephone line. 2.0 Mobile Computing 2.1 Definition Mobile Computing is a generic term describing your ability to use technology 'untethered', that is not physically connected, or in remote or mobile (non static) environments. The term is evolved in modern usage such that it requires that the mobile computing activity be connected wirelessly to and through the internet or to and through a private network. This connection ties the mobile device to centrally located information and/or application software through the use of battery powered, portable, and wireless computing and communication devices. This includes devices 2
  • 3. like laptops with wireless LAN or wireless WAN technology, smart mobile phones, wearable computers and Personal Digital Assistant (PDAs) with Bluetooth or IRDA interfaces. Mobile computing also defined as generic term describing one's ability to use technology while moving as opposed to portable computers, which are only practical for use while deployed in a stationary configuration. 2.2 Specification, services, and frequencies of Mobile Computing SAMSUNG NOTE II Specification -HSDPA: 21 Mbps (N7100) : 42 Mbps (N7105) -HSUP: 5.76 Mbps -LTE Cat3 (N7105 only): 50 Mbps -UL: 100 Mbps DL -Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot -Android OS, v4.1.1 (Jelly Bean), upgradeable to 4.1.2 (Jelly Bean) Services -GPS support and GLONASS -SMS (threaded view), MMS, Email, Push Mail, IM, RSS -Bluetooth v4.0 with A2DP, LE, EDR -Youtube, Facebook, Google search -TV-out via MHL A/V link - Smart Stay and Smart Rotate eye tracking - MP4/DivX/XviD/WMV/H.264/H.263 player - MP3/WAV/eAAC+/AC3/FLAC player - Image/video editor - Document editor (Word, Excel, PowerPoint, PDF) - Google Search, Maps, Gmail, - Voice memo/dial/commands 3
  • 4. Frequencies -2G Network, GSM 850 / 900 / 1800 / 1900 -3G Network, HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 /2100 – N7105 - 4G Network, LTE 800 / 900 / 1800 / 2600 – N7105 3.0 Internet Technology and Services 3.1 VoIP Technology that allows voice to be carried over internet connections or other networks using Internet Protocols (IP). Although comparatively inexpensive, the method does not provide real full-duplex communications. It is because unlike regular phone networks, IP networks break the voice signals into chunk that arrive at the destinations through different routes and at different intervals for reassembly in the correct order by the receiving device. This process often results in discernible gaps in the flow of a conservation. Also called internet telephone, IP telephony. 3.2 BLOG A website, similar to an online journal, that include chronological entries. The word blog was derived from the combination of the word web and log. Blogs typically focus on a specific subject (economy, entertainment news, etc.) and provide users with forums (or a comment area) to talk about each posting. Many people use blogs as they would a personal journal diary. 4.0 Types of network. 4.1 PAN A personal area network (PAN) is a computer network used for communication among computer devices (including telephones and personal digital assistants) close to one's person. The devices may or may not belong to the person in question. The reach of a PAN is typically a few meters. PANs can be used for communication among the personal devices themselves (intrapersonal communication), or for connecting to a higher level network and the Internet (an uplink). Personal area networks may be wired with computer buses such as USB 4
  • 5. and FireWire. A wireless personal area network (WPAN) can also be made possible with network technologies such as IrDA, Bluetooth, UWB, Z-Wave and ZigBee. 4.2 VPN VPN stands for "Virtual Private Network." (Not a competitor of UPN). This is a network term that most computer users don't need to know, but at least you can impress your friends by talking about it. A VPN refers to a network that is connected to the Internet, but uses encryption to scramble all the data sent through the Internet so the entire network is "virtually" private. For example, a large company that has offices in multiple locations may need to send data to the different locations via the Internet. To keep the information secure, the company might first set up a VPN with an encrypted connection. It's basically like having a secure Intranet over the Internet. 4.3 WLAN A wireless LAN (WLAN) is a wireless local area network that links two or more computers or devices using spread-spectrum or OFDM modulation technology based to enable communication between devices in a limited area. This give users the mobility to move around within a broad coverage area and still be connected to the network. 4.4 WIMAX WiMAX meaning Worldwide Interoperability for Microwave Access is a telecommunication technology that provides wireless transmission for data using variety of transmission modes, from point-to-multipoint links to portable and fully mobile internet access. The technology provides up to 3 Mbit/s broadband speed without the need for cables. The technology is based on the IEEE 802.16 standard (also called Broadband Wireless Access). The name “WiMAX” was created by the 5
  • 6. WiMAX Forum, which was formed in June 2001 to promote conformity and interoperability of the standard. 5.0 Conclusion Computer Networks and Communications are expanding rapidly each and everyday making, sharing of information trillion times before they exists. Mobile computing is now getting edgier by the day. New technologies are being implemented, tested and apply in mobile computing making us and the future another step closer. The internet is also getting better along the lines of the information age. Meanwhile, types of networks available for us adding it on top of making computing networks and communication the new men`s best friend. Reference http://cikgushahrul.blogspot.com/2010/05/latest-development-in-network.html 1/7/2013 http://lamanictku.blogspot.com/2011/04/mobile-computing.html 1/7/2013 https://en.wikipedia.org/wiki/Wireless_LAN 11/7/2013 http://en.wikipedia.org/wiki/Voice_over_IP 11/7/2013 http://www.youblisher.com/p/419553-S07-1-Describe-the-Latest-Development-in-Networksand-Communications/ 15/7/2013 6
  • 7. WiMAX Forum, which was formed in June 2001 to promote conformity and interoperability of the standard. 5.0 Conclusion Computer Networks and Communications are expanding rapidly each and everyday making, sharing of information trillion times before they exists. Mobile computing is now getting edgier by the day. New technologies are being implemented, tested and apply in mobile computing making us and the future another step closer. The internet is also getting better along the lines of the information age. Meanwhile, types of networks available for us adding it on top of making computing networks and communication the new men`s best friend. Reference http://cikgushahrul.blogspot.com/2010/05/latest-development-in-network.html 1/7/2013 http://lamanictku.blogspot.com/2011/04/mobile-computing.html 1/7/2013 https://en.wikipedia.org/wiki/Wireless_LAN 11/7/2013 http://en.wikipedia.org/wiki/Voice_over_IP 11/7/2013 http://www.youblisher.com/p/419553-S07-1-Describe-the-Latest-Development-in-Networksand-Communications/ 15/7/2013 6

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