1 / 30

Computer Merit Badge

Computer Merit Badge. Notes. INORMATION SYSTEM. People Procedures Data Hardware Software. Computer Components. Hardware Input Output Storage Processor Software Systems software Operating system Network operating system Software development tools Application software packages.

dympna
Download Presentation

Computer Merit Badge

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Computer Merit Badge Notes

  2. INORMATION SYSTEM • People • Procedures • Data • Hardware • Software

  3. Computer Components • Hardware • Input • Output • Storage • Processor • Software • Systems software • Operating system • Network operating system • Software development tools • Application software packages

  4. Hardware Start

  5. Supercomputers • The fastest, most powerful, and most expensive type of computer

  6. Computer Basics Functions: • Input device • Output device • Storage device • Central processing unit (CPU)

  7. INPUT DEVICES • Input device is a tool used to capture information and commands • Examples include: • Keyboard • Point-of-sale (POS) • Microphone • Mouse • Pointing stick • Touch pad • Touch screen • Bar code reader • Optical mark recognition (OMR) • Scanner

  8. OUTPUT DEVICES • Output device is equipment used to see, hear, or otherwise accept the results of information processing • Monitors • Cathode-ray tubes (CRTs) • Flat-panel displays • Liquid crystal display (LCD) monitors • Gas plasma displays • Pixels - the dots that make up an image on the computer screen

  9. OUTPUT DEVICES • Printers • Inkjet printers - make images by forcing ink droplets through nozzles • Laser printers - form images using an electrostatic process, the same way a photocopier works • Multifunction printers - scan, copy, and fax, as well as print

  10. STORAGE DEVICES Start

  11. STORAGE DEVICE CAPACITY • Storage capacity

  12. Processing Device • Central Processing Unit (CPU) - the actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together

  13. Software • Software contains the instructions that the hardware executes to perform an information processing task • Without the aid of software, the computer (e.g. hardware) is useless • Categories of software: • System • Tools • Applications

  14. Software Categories • System software - handles tasks specific to technology management and coordinates the interaction of all technology devices • Operating system software - supports the application software and manages how the hardware devices work together • Software tools • Programming languages and toolsets • Application software - software used to solve specific problems or perform specific tasks

  15. PRIMARY STORAGE • Random Access Memory (RAM) - temporary storage that holds the current information, the application software currently being used, and the operating system software • Megahertz (MHz) - the number of millions of CPU cycles per second • Gigahertz (GHz) - the number of billions of CPU cycles per second

  16. COMMON STORAGE DEVICES • Common storage devices include: • High-capacity floppy disk • Hard disk • CD-ROM (compact disc - read-only memory) • CD-R (compact disc-recordable) • CD-RW (compact disc-rewritable) • DVD-ROM • DVD-R • DVD-RW or DVD+RW • Flash memory device • Memory card

  17. Networks • Components of a computer network • Network topologies • Network access methods • Devices • TCP/IP

  18. Introduction Start

  19. TELECOMMUNICATIONS DEVICES • Types of modems include: • Telephone modems (dial-up) • Cable modems • Digital Subscriber Line (DSL) modems • Wireless modems • Satellite modems

  20. TELECOMMUNICATIONS DEVICES • Modem speed comparisons

  21. NETWORKING BASICS

  22. PHYSICAL TOPOLOGIES

  23. PHYSICAL TOPOLOGIES

  24. MEDIA • The three most common types of guided media include twisted-pair wiring, coaxial cable, and fiber optic cable

  25. Modems Start

  26. Modems - Connecting to the Internet Start

  27. Microwave Transmitters • Microwave transmitters and receivers - commonly used to transmit network signals over great distances

  28. CLIENT-SERVER NETWORKS • Client-server network - a versatile, message-based, and modular infrastructure that is intended to improve usability, flexibility, interoperability, andscalability as compared to centralized, mainframe computing

  29. CLIENT-SERVER NETWORKS Start

  30. PEER-TO-PEER NETWORKS • Peer-to-peer networks - enable networked computers to function as both servers and workstations

More Related