Journal10

21. Trouble shooting --- diagnosis, correct error/failure
       eg, computer doesn't start --1. plugged (cord),
                                                  2 power supply , BIOS.
                                                  3. OS problem
                                                  4. Failure in Hardware (replace the Hardware)

22. Fault tolerence
  e.g. A Java server that  never goes down(unbreakable Java)
          (from Application developers trends Jan 2005)
         NASA -- one engine dies, another starts

23. Virtual --- not real,
       virturfal reality
       eg. virtual machine --- Platform (Windows, Linus, Sun OS, Apple, MAC OS)

 24. computer component
       1. CPU ----chip
           speed --physical limit     MHZ(mega Herts),------kilo, mega, Giga, Tera, Zera
       2. RAM  -- chip  ---- access memory directly, not sequencially
                          when computer is off, then cleared.
       3. ROM----chip    --- origianl programs is in it
       4. Hard Disk-- Horse shoe shape --- information permanently
                             cf. floppy disk
       5. power supply
       6. mother board

Assignment
    1.Statistic by Labor Dept
       52 million end-user developer (someone who knows a little bit of programs)
        using search engine(program) --- Google, Alta Vista, Yahoo, Ask Jeeves, MSN, Lycos, AskMom
    2. opinion 
       two folds
       1. positive---- inhouse product sould be QA(quality assurance)
       2. negative

  AOMonline.org     (Academic of Management)