Introduction to Microcomputers

3,931 views
3,593 views

Published on

1 Comment
1 Like
Statistics
Notes
No Downloads
Views
Total views
3,931
On SlideShare
0
From Embeds
0
Number of Embeds
7
Actions
Shares
0
Downloads
285
Comments
1
Likes
1
Embeds 0
No embeds

No notes for slide
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • CEO: Intro to Computers
  • Introduction to Microcomputers

    1. 1. Introduction to Computers Essential Understanding of Computers and Computer Operations
    2. 2. Topics <ul><li>The term “computer”  </li></ul><ul><li>Four basic computer operations  </li></ul><ul><li>Data and information  </li></ul><ul><li>Principal components of computer  </li></ul><ul><li>Data storage devices and usage  </li></ul><ul><li>Software  </li></ul><ul><li>The Internet & WWW  </li></ul>
    3. 3. What is a Computer? <ul><li>A programmable machine that inputs , processes , and outputs information </li></ul><ul><li>An electronic device for storing and processing data </li></ul><ul><li>Composed of hardware and software </li></ul><ul><li>Can exist in a variety of sizes and configurations </li></ul>
    4. 4. Examples
    5. 5. What Do Computers Do? <ul><li>Input, Process, Output, & Store data </li></ul>Input Process Output Store Data
    6. 6. Input, Processing, Storage, and Output Devices
    7. 7. What is Data? <ul><li>The raw material of information </li></ul><ul><li>Contain facts w/o interpretations </li></ul><ul><li>The information entered into, and stored within a computer or file </li></ul><ul><li>Used by applications to accomplish tasks </li></ul><ul><li>Unprocessed information </li></ul><ul><li>E.g. text, numbers, images, audio, & video </li></ul>
    8. 8. What is Information? <ul><li>Contains meaning, knowledge, instruction, communication, & representation of data </li></ul><ul><li>Result of processing, manipulating and organizing data in a way that adds to the knowledge of the person receiving it </li></ul><ul><li>The output of information systems </li></ul>
    9. 9. Flow of Computing <ul><li>Data  Processing  Information </li></ul><ul><li>Example </li></ul>Pat Brown 1001 Jump Street Shoreline, WA 98123 $25 per hour 40 hours Retrieve data Calculate weekly wage: $25 X 40 hours = $1000 Send information to output device
    10. 10. Principal Components of Computer <ul><li>Input devices </li></ul><ul><li>System units </li></ul><ul><li>Storage (memory) devices </li></ul><ul><ul><li>Importance of Saving </li></ul></ul><ul><li>Output devices </li></ul>
    11. 11. Input Devices <ul><li>Keyboard, mouse, scanner, & etc </li></ul>
    12. 12. System Units <ul><li>CPU (Central Processing Unit) </li></ul><ul><li>Random Access Memory (RAM) </li></ul><ul><li>Secondary Storage Devices </li></ul>
    13. 13. Central Processing Unit (CPU) <ul><li>Main processor of a computer that makes everything work </li></ul><ul><li>Interprets & carries out the basic instructions </li></ul><ul><li>Performs all the instruction, logic, & mathematical processing </li></ul>
    14. 14. Storage (memory) Devices <ul><li>Two types: </li></ul><ul><ul><li>Primary & Secondary </li></ul></ul><ul><li>Primary: </li></ul><ul><ul><li>Temporary memory for dynamic access by the processor (CPU) </li></ul></ul><ul><ul><li>RAM (Random Access Memory) </li></ul></ul><ul><li>Secondary: </li></ul><ul><ul><li>For large data storage, e.g. hard disk drive </li></ul></ul><ul><li>RAM is much faster than disk drives for dynamically interacting with the processor </li></ul>
    15. 15. Random Access Memory (RAM) – the Primary Memory <ul><li>Temporarily stores instructions and data waiting to be processed by the processor </li></ul><ul><li>Memory units are measured in kilobytes, megabytes, or gigabytes </li></ul><ul><li>1 kilobytes = 1,000 bytes = 1,000 memory locations ≈ 1,000 characters </li></ul><ul><li>1 megabyte (MB) = 1 million memory locations </li></ul><ul><li>1 gigabyte (GB) = 1 billion memory locations </li></ul><ul><li>E.g. 512 MB = 512 million characters 1 MB can hold approx. 500 pages of text </li></ul>
    16. 16. Secondary Memory (Semi-permanent) <ul><li>Magnetic Disks </li></ul><ul><ul><li>Hard disks, floppy disks, zip disks </li></ul></ul><ul><li>Optical Disks </li></ul><ul><ul><li>CD-ROM, CD-R (Recordable), CD-RW, DVD </li></ul></ul><ul><li>Flash Memory Cards </li></ul><ul><ul><li>USB flash drive: Small, lightweight, & large storage capacity </li></ul></ul>
    17. 17. Importance of Saving and Saving Often <ul><li>When using an application, data is stored in RAM temporarily </li></ul><ul><li>When the file, application, or computer closes, the data in the RAM is erased </li></ul><ul><li>Where do I save the files? </li></ul><ul><ul><li>At the Lab: Removable disks such as floppy, zip, or USB. </li></ul></ul><ul><ul><li>At home: Hard drive (C:) or any removable disk. </li></ul></ul><ul><li>Never remove a disk while the light flashes </li></ul><ul><li>Saving on an existing file replaces the old data with new ( Save vs. Save As ) </li></ul>
    18. 18. Importance of Data Backup <ul><li>All secondary storage devices such as floppy and hard drive disks eventually fail, and you lose the data </li></ul><ul><li>Make backup files weekly, if not daily </li></ul><ul><li>If you have a computer, use the hard drive or a removable disk as your backup </li></ul><ul><li>Otherwise, use the second removable disk </li></ul>
    19. 19. Output Devices <ul><li>Printers </li></ul><ul><li>Monitors </li></ul><ul><li>and more </li></ul>
    20. 20. Personal Computers <ul><li>PC, Mac, and other microcomputers </li></ul><ul><li>Desktop, Laptop, PDA </li></ul><ul><li>Windows, Mac OS, Linux, etc. </li></ul><ul><li>Increasingly more capable, portable, affordable, and mobile </li></ul>
    21. 21. System Software <ul><li>Manages computer operations </li></ul><ul><li>Instructs computer how to perform functions of loading, storing, and executing an application software and how to transfer data </li></ul><ul><li>Examples: Windows, Mac OS, Linux, & etc. </li></ul>
    22. 22. Application Software <ul><li>Programs that tell a computer how to perform tasks and produce information </li></ul><ul><li>Categories: </li></ul><ul><ul><li>Word processing </li></ul></ul><ul><ul><li>Spreadsheet </li></ul></ul><ul><ul><li>Database </li></ul></ul><ul><ul><li>Presentation graphics </li></ul></ul><ul><ul><li>Web and Internet access </li></ul></ul><ul><ul><li>Desktop publishing / image editing / multimedia editing </li></ul></ul>
    23. 23. The Internet and WWW <ul><li>The Internet is the world’s largest network </li></ul><ul><li>Uses: </li></ul><ul><ul><li>Send messages (e-mail) </li></ul></ul><ul><ul><li>Access a wealth of information </li></ul></ul><ul><ul><li>Electronic commerce </li></ul></ul><ul><ul><li>Online meeting </li></ul></ul><ul><ul><li>Access entertainment and multimedia </li></ul></ul><ul><li>WWW (World Wide Web) </li></ul><ul><ul><li>The more popular component of the Internet </li></ul></ul><ul><ul><li>Web page: A document containing text, hyperlinks, images, & other multimedia contents </li></ul></ul><ul><ul><li>Web site: A collection of Web pages </li></ul></ul>
    24. 24. Communications Devices <ul><li>Modem </li></ul><ul><li>Network card </li></ul><ul><li>Router </li></ul><ul><li>Wireless modem, network card, & router </li></ul>

    ×