CSC103 Mobile Networks
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This document discusses key aspects of mobile devices and networks. It defines what makes a smartphone a smartphone, including internet access, personal information management features, and the ability to run applications. It explores the operating systems used on smartphones like Android, iOS, Windows Phone, and Blackberry. It also examines how cellular networks and wireless providers work, detailing the technology behind voice calls and data transmission as well as network speeds from 2G to 5G.
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Input Hardware
Devices that translate data into a form the computer can process
Translates words, numbers, sounds, and pictures into binary 0s and 1s (off or on electrical signals or light pulses)Output Hardware
Devices that translate information processed by the computer into a form humans can understand
Translates binary code into words,
numbers, sounds, and pictures
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboards: convert letters, numbers,
and characters into electrical signals
English keyboards differ from foreign language keyboardsHow keyboards work:
You press a key
This interrupts the current flowing through the circuits
Processor determines where the break occurs
It compares the location of the break with the (x,y) character map for the language on the keyboard’s ROM chip
A character is stored in keyboard memory
*
(continued)
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboards (continued)
The character is then sent to PC as a data stream via wire or wireless connection
OS interprets its own operating-system-specific commands and sends the others to the application for interpretation
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboard types
104 – 108 keys desktop standard
80 – 85 keys for laptops
Wired
Connect to CPU via a serial or USB port
Wireless use either
IR (infrared) technology
Radio Frequency (RF) technology
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Terminal Types
Dumb Terminals
a.k.a. Video Display Terminal (VDT)
Has display screen and keybo.
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TEDx Leuven 2012
The presentation "Living with Big Mother - Smart Phones are Smart Agents of the future" of TEDx Leuven 2012.
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This document describes a 5 pen pc technology called P-ISM that was created in 2003. P-ISM consists of 5 functions: a CPU pen, camera, virtual keyboard, visual output, and phone. It uses a dual core processor, LED projector, Bluetooth, WiFi, and emits a laser keyboard. P-ISM allows portable ubiquitous computing. While promising, it has limitations including cost, battery life, and need for precise positioning. The document concludes that this is just the start of more compact communication devices to come.
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© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
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Input Hardware
Devices that translate data into a form the computer can process
Translates words, numbers, sounds, and pictures into binary 0s and 1s (off or on electrical signals or light pulses)Output Hardware
Devices that translate information processed by the computer into a form humans can understand
Translates binary code into words,
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Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboards: convert letters, numbers,
and characters into electrical signals
English keyboards differ from foreign language keyboardsHow keyboards work:
You press a key
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Processor determines where the break occurs
It compares the location of the break with the (x,y) character map for the language on the keyboard’s ROM chip
A character is stored in keyboard memory
*
(continued)
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboards (continued)
The character is then sent to PC as a data stream via wire or wireless connection
OS interprets its own operating-system-specific commands and sends the others to the application for interpretation
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Keyboard types
104 – 108 keys desktop standard
80 – 85 keys for laptops
Wired
Connect to CPU via a serial or USB port
Wireless use either
IR (infrared) technology
Radio Frequency (RF) technology
*
Introduction to Information Technology: Your Digital World
© 2013 The McGraw-Hill Companies, Inc. All rights reserved.
Using Information Technology, 10e
Terminal Types
Dumb Terminals
a.k.a. Video Display Terminal (VDT)
Has display screen and keybo.
Digital literacy types of computers
There are many types of computers categorized by size and processing power. Desktops are designed for individual use and have a tower, keyboard, mouse and monitor. Laptops are portable with integrated components and run on batteries. Netbooks are smaller laptops with less power. Tablets use touchscreens and apps. Mobile devices include phones and can access the internet, apps, cameras and more. Servers store network files and data. Mainframes process large amounts of data for thousands simultaneously. Supercomputers perform quadrillions of calculations and are used for research. Wearable computers integrate technology into watches and clothing. Embedded computers are single-chip systems installed in devices. Future computers may be more integrated with glasses and highly engineered materials.
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Alpha Tech Module9 glossary
The document defines various digital and networking terms including camcorder, cell phone, compact disc, digital camera, digital versatile disc, electronic mail, home office, internet, intranet, MPEG Audio Layer 3, network, personal digital assistant, pixels, plug-in, regional work centre, resolution, speech recognition, speech synthesis, telecommuting, universal serial bus cable, website, wide area network, windows audio wave, and windows media audio.
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Digital convergence refers to the use of a single device to handle media, internet access, communication, and entertainment needs. Smartphones provide internet access, personal organization, media playback, GPS navigation, and computing power to run various applications. They connect to networks using Wi-Fi or cellular data and contain components like processors, memory, and input/output devices. Tablets are light, portable devices that run full operating systems like iOS or Android and are well-suited for media consumption, while netbooks are smaller laptops focused on running computer programs. Digital media represents information using numerical data rather than physical forms, allowing for new creative opportunities and easier distribution across different platforms and devices.
how does smart phone works?
A smart phone is a mobile device that combines a cell phone and computer capabilities. It allows users to make phone calls, access the internet, download and use apps, and more. Smart phones run operating systems like Android, iOS, Blackberry OS, and others. They use technologies like touch screens, processors, memory, and wireless networks to provide these connected computing features in a portable device.
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- 1. S Mobile Devices & Networks CSC 103 – Intro to Computing
- 2. Digital Convergence… The use of a single unifying device to handle media, internet, entertainment and telephony.
- 3. What makes a smartphone a smartphone? Internet access PIM features (Contacts, Calendars, etc.) Voice Recording Features Music Player & Organization Digital Image & Video Capture GPS; Computing Power to run apps
- 4. Are Smartphones computers? IPOS Input/Output Devices CPU (Processing), Memory Storage
- 5. What Operating Systems are used? Android iOS Windows Phone Blackberry
- 6. What Software can be run? Office Apps Photo/Video Editing GPS, Maps, Calendars, Emails Web Browsers, Utilities, Games Music Players, Movies/TV, etc.
- 7. Messaging SMS – Basic “Text Message” stands for Short Message Services. Limited in length and content (text) MMS – Unlimited size, adds photos and video
- 8. How do cell phones work? Use an analog-to-digital converter chip to convert sound waves to digital data Digital data is compressed using a digital signal processor Digital data is transmitted as radio waves
- 9. How do cellular networks work? Telecommunications company constructs series of overlapping cells – or a geographic areas, centered on a base transceiver station (cell tower) Cell tower passes the call to a central location - mobile switching center
- 10. Wireless Providers Verizon, AT&T, T-Mobile, Sprint, Virgin Aspects to take into Account Coverage, Reliability, Speed, Performance Cost, Data Plans, Customer Service
- 11. Network Speeds 2G –50 Kbps (not meant for browsing) G – (GPRS) 114 Kbps E EDGE 217 Kbps 3G – 3rd Generation 384 Kbps 4G LTE - Long Term Evolution 160 Mbps LTE Advanced – 300Mbps up to 1 Gbps 5G Up to 1 Tbps
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