July 29th, 2008Testing windows live writer
Checking to see if Windows Live Writer is still okay after all this years ~_~
Posting a test pic:
Okay, done.
July 25th, 2008COMPSCI 111 Lec. 3 - Software
Time: 1 -2pm (Friday)
Location: MLT1
Mira and Atie decided to play truant for the first time today, so here I am on my own in this class. Technically, Lyn and Fareha are with me, but well… Today’s topic for Compsci 111 lecture is.. urm… Software. Looking at the first slide, I was like “Hrm… Free stuff.”
- Software - usu. include -all data we’re working with
- Data & instruction, initially separated
- known also as programs
- loaded from secondary storage into primary memory
- runs (executes) from RAM
- Software is loaded (HDD - RAM) - Read/Write CPU executes instruction (CPU)
- Read up in CPU very rapidly
- FILE FORMATS:
- all data stored in binary numbers
- organised in chunks (of related dtaa)
- method of encoding - dep. on software, = file format
- FORMATS - define the way numbers r interpreted
- EXTs - a dot followed by letters at the end of a file
- Windows OS use ext to determine file format n decide which apps to use to open a file
Why are standards needed? (standardised agreement)
- OS - open standard - published freely to the public, free to use, maintained by a non-profit orgs (xml, html, uml)
- But open x mean all good
- Proprietary standard - intellectual prop of an entity (indivisual/comp), use is usu through license
- risk for users: vendor lock-in
Proprietary Software
Software that has restrictions on using/copying
- all rights retained by owner
- owner enforces restrictions
License:
- commercial
- freeware
- sharewre
- semi free (usu non-profit org)
Freeware
- software dist free - no agreement abt dist, access to source code
- types: loss leader (given away with loss as sales promo), adware, donationware, postcardware
- abandonware: not legally recognised (IE, iTunes, Adobe Reader)
Shareware
- on the idea of ‘try b4 buying’
- trial period: purchase license/upgrade to comm ver
- nagware: reminder messages to license software
- crippleware: softwr lacks the advanced features until licensed (word processor that can’t save of print - (HAHA! Sounds like OFFICE 2007, doesn’t it??)
Open Source/Free Software
- freedom to use n study the work
- to copy n share the work with others
- change the work
- distribute changed and therefore derivative works
- copyright prevents these acts - explicit permission is required, free software license gives permission
- Richard Stallman - free software foundation (FSF), GPL (GNU General Public License) - legal doc that gives permission :P, Copyleft
Kinds of Software
- App software - helps user complete task
System software - needed to run the comp - OS - manages all the hardware resources for apps (CPU, RAM..)
- device drivers: help OS control hardwre
- diagnostic and maintenance tools - for analysis, troubleshooting n optimisation
OS
- low-level software - allow the use of system
- default interface when no app is running
- manages the system
Continued in notebook.
July 7th, 2008Here Comes A Test Post
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July 7th, 2008Hello world!
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