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Computer Hardware and Software

Computer Hardware and Software. Presented by Dominic S. Hornsby D. Hornsby Technology Enterprises 504-452-9098 504-241-2999 http://www.dhornsby.com. EC Hardware and Software Objectives. Understanding computer terms, components, and software necessary to pursue Electronic Commerce.

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Computer Hardware and Software

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  1. Computer Hardware and Software Presented by Dominic S. Hornsby D. Hornsby Technology Enterprises 504-452-9098 504-241-2999 http://www.dhornsby.com

  2. EC Hardware and SoftwareObjectives Understanding computer terms, components, and software necessary to pursue Electronic Commerce.

  3. EC Hardware and Software What is in it for you? • Defining a PC • Anatomy of a PC • Peripherals • Disk drives and Disks

  4. WHAT DEFINES A PC? Hardware Software

  5. ANATOMY OF A PC Monitor CPU Keyboard Mouse

  6. DISPLAY SCREEN • OTHER NAMES: • Monitor • Terminal

  7. TYPES OF DISPLAY SCREENS • Monochrome • Color • VGA • SVGA • LCD • ELD

  8. DISPLAY SCREEN SIZE 15 to 21 inches

  9. KEYBOARD Function Keys “QWERTY” Special Keys Numeric Keypad

  10. MICE

  11. CENTRAL PROCESSING UNIT (CPU)

  12. Central Processing Unit (CPU) MICROPROCESSOR

  13. Central Processing Unit (CPU) BUSES

  14. Central Processing Unit (CPU) MEMORY • RAM (Random Access Memory) • Volatile and Temporary • Only available when PC is on • ROM (Read Only Memory) • Non-volatile and Permanent • Does not go away when PC is off

  15. Central Processing Unit (CPU) MEMORY KILOBYTES (KB) Thousands of Bytes MEGABYTES (MB) Millions of Bytes GIGABYTES (GB) Billions of Bytes TERABYTES (TB) Trillions of Bytes

  16. Central Processing Unit (CPU) MEMORY: BITS & BYTES J = 01001010 Bit Byte

  17. Central Processing Unit (CPU) EXPANSION SLOTS/PORTS

  18. Defining a Peripheral A device that operates in conjunction with, but is not a part of, a computer, such as a printer, modem, or scanner.

  19. Defining a Peripheral PARALLEL INTERFACE #1-8 from computer to peripheral #9 from peripheral, back to computer

  20. Defining a Peripheral SERIAL INTERFACE #1 from computer #3 ground connection #2 from peripheral

  21. Defining a Peripheral USB - Universal Serial Buss Cable Universal adapter on both ends #3 faster data transmissions #2 easier to connect and disconnect

  22. Peripherals DOT MATRIX PRINTERS Used in services

  23. Peripherals INK JET PRINTERS Used for business and personal use

  24. Peripherals COLOR LASER PRINTERS Used for businesses - color documents

  25. Peripherals PLOTTERS Professional - Large Size Technical Drawings

  26. Peripherals MODEMS Internal & External

  27. MODULATION Digital in Analog out Digital out DEMODULATION Analog in

  28. Peripherals FLAT-BED SCANNERS

  29. OTHER PERIPHERALS • Special Keyboards • Television linking devices • Storage and Backup Drives • Jazz & Zip & Ditto • Read Write CD-ROMs • DVD-ROM

  30. DISKDRIVES AND DISKS Gradually being phased out

  31. Diskdrives and Disks FLOPPY DISK FEATURES Write Protection Read/Write Access

  32. Diskdrives and Disks HARD DISKS/HARD DRIVES Stores Application and Data Files

  33. Diskdrives and Disks DISK TERMINOLOGY 0 Tracks 79 Sectors

  34. Diskdrives and Disks DISK TERMINOLOGY Cylinder Read/Write Heads

  35. WHAT IS A FILE?

  36. THE FILE CONCEPT

  37. FILE NAMING CONVENTIONS I think I’ll call this file “George”...

  38. FILENAME EXAMPLES • No longer limited to 8 characters • Extensions assigned • Can be 256 characters long • User customizable

  39. Managing Data - Grouping Files/Folders

  40. Types of Programs GENERAL CATEGORIES • Operating Systems • Application Programs • Utility Programs

  41. OS THE OPERATING SYSTEM Controls the most basic functions of the computer & keeps it running efficiently.

  42. WHAT AN OS DOES • Manages all files & directories • Reads and writes files to disk & to main memory • Allocates/Controls memory • “Runs” programs • Provides access to all peripheral devices • Reads the keyboard • Updates the screen

  43. A computer cannot operate without an operating system.

  44. Operating Systems SOME DISK AND FILE FUNCTIONS 1. Create a File 2. Delete a File 3. Rename a File 4. Copy a File 5. Duplicate a Floppy Disk 6. List Files to the Screen 7. Determine a File Size 8. Create File Sub-directories 9. Format a Blank Disk 10. Check a Disk for Errors

  45. Operating Systems TASKING Multi-tasking Single-tasking

  46. APPLICATION PROGRAMS Spreadsheets CAM Utility Programs Desktop Publishing Multimedia Presentation Graphics CAE Interpreter/Compiler Device Drivers Database Mgmt. Systems EDI Word Processing Communications Modem/Fax Software CAD Expansion/Compression

  47. Application Programs BUSINESS APPLICATIONS Word Processing Spreadsheet Presentation Database Communication

  48. Application Programs - Word Processing

  49. Application Programs - Desktop Publishing

  50. Application Programs - Spreadsheets

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