Understanding Computers and the Internet

Course Lectures

• Hardware

  David J. Malan

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  The first module introduces essential computer hardware concepts, including:

  • Computation basics and data representation (bits and bytes).
  • Understanding ASCII and how it encodes text.
  • Exploring processors and their role in computing.
  • Motherboard components: buses, connectors, ports, and sockets.
  • Memory types: ROM, RAM, and cache, and their functions.

  Students will gain a foundational understanding of the physical components that comprise a computer system.

• Hardware, Continued

  David J. Malan

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  This module continues exploring hardware, focusing on secondary storage and expansion options. Topics include:

  • Types of storage: floppy disks, hard disks (PATA and SATA), CDs, and DVDs.
  • The concept of virtual memory and its importance.
  • Expansion buses and cards, including AGP, ISA, and PCI standards.
  • Input/Output devices and peripherals, essential for user interaction.
  • Tips on how to effectively shop for a computer.

  Students will develop a deeper understanding of computer components and how to make informed purchasing decisions.

• The Internet

  David J. Malan

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  This module delves into the Internet, covering vital concepts about networks and communication protocols. Key topics include:

  • Types of networks: client-server and peer-to-peer models.
  • Understanding LANs and WLANs, their functions, and advantages.
  • Email protocols: IMAP, POP, and SMTP, along with netiquette and spam management.
  • The World Wide Web, focusing on URLs, HTTP, and the significance of blogs and instant messaging.
  • Exploring Usenet and SSH fundamentals.

  Students will gain insights into the backbone of online communication and how the Internet operates.

• The Internet, Continued

  David J. Malan

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  The continuation of the Internet module focuses on advanced network concepts and infrastructure:

  • Exploring network topologies and their implications for connectivity.
  • The Internet's backbone, discussing TCP/IP, DHCP, and DNS.
  • Understanding NAT and its role in network security.
  • Ethernet technology: NICs, cabling, switches, routers, and access points.
  • Wireless communication technologies including IR, RF, Bluetooth, and WiFi.
  • Different types of ISPs and modems: dial-up, cable, and DSL.

  This module equips students with comprehensive knowledge necessary for navigating the complexities of networking.

• Multimedia

  David J. Malan

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  This module introduces multimedia elements critical to modern computing. Key areas of focus include:

  • Understanding graphics: file formats, bitmap vs. vector graphics, and the importance of compression.
  • Exploring audio file formats and the concept of audio compression.
  • Video formats and compression techniques for efficient storage.
  • Streaming technologies and their impact on multimedia delivery.

  Students will learn how to effectively utilize multimedia in various applications, enhancing their digital literacy.

• Security

  David J. Malan

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  This security module examines various threats to privacy and security in the digital realm. Topics include:

  • Privacy threats: understanding cookies, logs, and data recovery.
  • Common security risks: packet sniffing, phishing attacks, and hacking.
  • Recognizing and defending against viruses, worms, spyware, and zombies.
  • Discussing piracy, particularly WaReZ and cracking issues.

  Students will develop an understanding of the risks they face online and how to protect themselves.

• Security, Continued

  David J. Malan

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  In this module, students learn about defenses against cyber threats and how to secure their information. Key topics include:

  • Defensive strategies: scrubbing data, using firewalls, and proxy servers.
  • The importance of VPNs and cryptography for secure communications.
  • Utilizing virus scanners and understanding product registration and activation.

  By the end of this module, students will know how to implement various security measures to safeguard their digital presence.