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Micro Op SYS (DOS)

Micro Op SYS (DOS)

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Micro Op SYS (DOS)

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  1. Micro Op SYS (DOS) Chapters 1, 2, 3, 5, 6, 7

  2. Hardware • Four Categories • CPU (Central Processing Unit) • Primary Storage (RAM) • Input/Output Devices • Keyboard • Mouse • Monitor • Printer • Secondary Storage (Drives)

  3. SOFTWARE • Two Categories • System Software • Operating Systems • DOS, Win3.x, Win9x, WinNT, Win2000, WinXp, Win2003, Unix, Linux, MAC, OS2, Longhorn • Utility Support Programs • Norton, Macafe, etc.

  4. SOFTWARE (cont) • Application Software • Eight Categories • Word Processing • Spreadsheet • Database Management • Communications • Mathematical Molding • Graphics • Games • Software Development Tools

  5. Drive Layout • Fragmentation • Master Boot Record (MBR) • File Allocation Table (FAT) • Root Directory • Directory • Sub-Directory

  6. DOS • File Naming Convention D:\Test\filename.ext [drive] [path] [filename] [extension] Filename → Max of 8 characters Extension → Max of 3 characters Example: A:\test\dos\project.doc

  7. Executable files BAT – batch file COM – program file <64KB EXE – program file >64KB Text files BAK – Backup text file BAS – BASIC file DAT – Data File DBF – dBase file DOC – Documentation file HLP – Help file INI – Initialization file PRN – Printer file SYS – System ASCII file TXT – Text file Other files DEF – Program setup file FON – Font file GIF – Graphics image file OVL – Overlay file PIF – Program information file SYS – System binary file TIF – TIFF graphic image file WKI – Lotus 1-2-3 worksheet file WPG – WordPerfect graphic file XLS – Excel file Extensions

  8. Wildcards • Two types • Asterisk (*) • Representing a group of one or more characters • Question Mark (?) • Representing only a single character • Used a lot with the DIR command for narrower searching

  9. DOS Commands • Internal • Frequently used and/or relatively small DOS commands loaded into RAM when the system is booted • External • Reside on the DOS disk • Must be copied into RAM each time they are executed

  10. Some DOS Commands • DATE • TIME • HELP • Help DATE • Date /? • Format • Switches: • /S – make bootable • /V – add a volume label • /Q – quick format • /F – floppy disk size • /U - unconditional

  11. Internal DOS Commands • Frequently used and/or relatively small DOS commands loaded into RAM when the system is booted

  12. DOS Commands • CLS • REN • VER

  13. DOS Commands (cont) • COPY • copy filename.ext a:filename.ext • Can use wildcards • Copy *.* a:*.* • DEL • del filename.ext • Can use wildcards • del *.*

  14. DOS Commands (cont) • TYPE • Allows you to view the contains inside of a file without having to open another program

  15. External DOS Commands • Reside on the DOS disk • Must be copied into RAM each time they are executed

  16. DOS Commands • LABEL • CHKDSK (after DOS6.2 SCANDISK) • DISKCOPY • Must be the same size • UNDELETE

  17. DOS Commands (cont) • ATTRIB • attrib ±A ±H ±R ±S a:filename.ext • attrib a:*.* • XCOPY • Similar to COPY but allows you to include subdirectories • /s must be used to copy subdirectories

  18. DOS Disk Commands • CD or CHDIR • MD or MKDIR • RD or RMDIR

  19. DOS Disk Commands (cont) • TREE • DELTREE • PROMPT

  20. DOS Disk Commands (cont) • MOVE • PROMPT • $t – system time • $d – system date • $n – default drive • $g – the > character • $_ - “new line” command (to skip a line) • $p – default disk and current directory

  21. DOS Disk Commands (cont) • PATH • Path c:\;c:\dos;a:\