1 / 17

LIBS 100 Mr. Ed Rossman

LIBS 100 Mr. Ed Rossman. Essential Computing Concepts. Objectives. Describe components of a computer system Define microprocessor, memory, and auxiliary storage. Memory. Input. Central processing unit (CPU). Output. Auxiliary Storage. Auxiliary Storage. Auxiliary Storage.

margaret-donovan
Télécharger la présentation

LIBS 100 Mr. Ed Rossman

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. LIBS 100Mr. Ed Rossman Essential Computing Concepts

  2. Objectives • Describe components of a computer system • Define microprocessor, memory, and auxiliary storage

  3. Memory Input Central processing unit (CPU) Output Auxiliary Storage Auxiliary Storage Auxiliary Storage Any Computer System

  4. The IBM PC • A combined effort between IBM (credibility and marketing), Microsoft (operating system), and Intel (microprocessor); introduced in 1981 • The PC was created as an ‘open’ machine enabling independent contractors to develop hardware and/or software to improve it • PC clones quickly followed and the market soon exploded; IBM has a fraction of the market it created

  5. The PC Today

  6. Inside the PC • All computers are based on the binary number system • A bit or binary digit has one of two values, zero or one • A byte is the smallest addressable unit of memory (8 bits) • ASCII provides for 256(or 28) characters • 01000001 – A • 01000010 – B • etc. On Off

  7. The Microprocessor • The central processing unit (cpu) or “brain” of the PC • Original chips were numbered • 8086, 80286, 80386, 80486 • Pentium is an Intel trademark • Clock speed (MHz or GHz) differentiates chips • higher number = faster processing speed

  8. Megs, Gigs, etc. • Clock speed determines how many instructions per second the microprocessor can execute. • A MHz = megahertz; one million cycles/second • GHz = gigahertz; one billion cycles/second

  9. Random Access Memory (RAM) • Transient (erased when power turned off) • Measured in bytes • 1 Kilobyte = 210 characters (~1,000 bytes) • 1 Megabyte = 220 characters (~1,000,000 bytes) • 1 Gigabyte = 230 characters (~1,000,000,000 bytes) • Need 256Mb or 512Mb of RAM • Keep multiple programs & data files in memory • Graphic-intensive programs demand a lot of memory

  10. Auxiliary Storage • Floppy Disk • No longer standard • Hard (fixed) disk • 30 Gb and higher • Removable storage • CD-R/CD-RW • DVD/DVD-R/DVD-RW • Zip disks • Thumb/jump drives • Tape

  11. Input Devices

  12. The Monitor • Resolution is expressed in picture elements or pixels; (800 x 600 or 1024 x 768) • The higher the resolution, the more you can see at one time. • Larger monitors enable you to you run at higher resolutions; e.g., 19” to run 1024 x 768 comfortably • A graphics card speeds processing

  13. Lower Resolution (800 x 600) Displays 20 rows and 8 columns

  14. Higher Resolution (1024 x 768) Displays 28 rows and 12 columns

  15. The Printer • Ink Jet • Today’s entry level • Laser • Top-of-the line • Four-in-one functionality • Printer, scanner, fax, copier • Network printer

  16. Summary • Understand components of a computer system for usage • Begin familiarity with common acronyms and terms • Think about computer as tool for information gathering

  17. References Grauer, Robert and Maryann Barber. Essential Computing Concepts. New Jersey: Person Prentice Hall, 2004. Internet Pioneers. http://www.ibiblio.org/pioneers/index.html Webopedia. http://www.webopedia.com/TERM/H/HTTP.html

More Related