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Mobile Technologies: Chapter Notes | Computer Application: Class 10 PDF Download

➢ Wireless communication involves transmitting signals through air and space using radio waves. Wireless spectrum is allocated by governments and international organisations.Mobile Technologies: Chapter Notes | Computer Application: Class 10➢ GSM: Global System for Mobile communications (GSM) is world’s most widely used cell phone technology having 80% mobile phone users. It is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) digital cellular networks for mobile phones.
Mobile Technologies: Chapter Notes | Computer Application: Class 10 The GSM standard was developed as a replacement for first-generation (1G) analog cellular networks, and originally described a digital, circuit-switched network for voice telephony. This was expanded to facilitate GPRS (General Packet Radio Services).
➢ CDMA: Code Division Multiple Access (CDMA) is an alternative cell phone technology to GSM. CDMA uses a “broad -spectrum” electromagnetic waves for signaling with wider bandwidth. This allows multiple people on multiple cell phones to be “communicated” over the same channel to share a bandwidth of frequencies. In CDMA technology, data and voice packets are separated using codes and then transmitted using a wide frequency range. CDMA is being used for 3G high-speed internet access on mobile. Wireless.Mobile Technologies: Chapter Notes | Computer Application: Class 10➢ 3G: 3G is the third generation of Wireless & Mobile technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.
➢ 4G: 4G is fourth-generation of wireless service, which refers to the next wave of high-speed mobile technologies that will be used to replace current 3G networks. 4G wireless network is next step of 3G, which is currently the most widespread, high-speed wireless service. At present, 4G is available in limited countries and areas.
➢ WLL (Wireless Local Loop): In traditional telephone networks, phone was connected to the nearest exchange through a pair of copper wires. Wireless Local Loop (WLL) technology simply means that the subscriber is connected to the nearest telephone exchange through a radio link instead of copper wires. WLL is basically the use of radio wave to provide a telephone connection to the home. In general, WLL is cheaper and quicker than copper wire connectivity.Mobile Technologies: Chapter Notes | Computer Application: Class 10➢ Wi-Fi (Wireless Fidelity): Wi-Fi is a very common wireless technology that was developed in the 1990s. It is used to connect machines in a Local Area Network (LAN). So, Wi-Fi is like a wireless version of Ethernet.Mobile Technologies: Chapter Notes | Computer Application: Class 10➢ SMS: Short Message Service (SMS) is a text messaging service component of phone, web, or mobile communication systems, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices.
➢ MMS: Multimedia Message Service (MMS) is a method of transmitting graphics, short video and audio files from mobile phone networks. Today, these have been replaced by apps like Facebook and WhatsApp.

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FAQs on Mobile Technologies: Chapter Notes - Computer Application: Class 10

1. What are some common mobile technologies used today?
Ans. Some common mobile technologies used today include 4G and 5G networks, Wi-Fi, Bluetooth, GPS, and NFC (Near Field Communication).
2. How does 4G differ from 5G in terms of mobile technology?
Ans. 4G (Fourth Generation) and 5G (Fifth Generation) differ in terms of speed, latency, and capacity. While 4G offers faster download and upload speeds compared to previous generations, 5G provides even faster speeds, lower latency, and increased capacity to connect multiple devices simultaneously.
3. What is the significance of Wi-Fi in mobile technologies?
Ans. Wi-Fi allows mobile devices to connect to the internet wirelessly, enhancing their usability and convenience. It enables faster data transfer speeds, seamless internet browsing, downloading apps, streaming videos, and connecting to other devices on the same network.
4. How does Bluetooth technology work in mobile devices?
Ans. Bluetooth technology enables wireless communication between mobile devices and other devices such as speakers, headphones, smartwatches, and car systems. It uses short-wavelength radio waves to establish a secure connection, allowing users to transfer data, stream audio, and control devices remotely.
5. What is the role of GPS in mobile technologies?
Ans. GPS (Global Positioning System) is a satellite-based navigation system that allows mobile devices to determine their precise location, velocity, and time information. It enables various applications such as navigation, location-based services, geotagging, and tracking, making it an essential component of mobile technologies.
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