Tried to do "Algorithms, Part I" of Princeton at Coursera

I tried to do "Algorithms, Part I" of Princeton at Coursera last February, but I completed only until week 4.

Here are the screenshots of the assignments that I completed:

I completed a free course: "Introduction to Databases" from Stanford Online

Yeey!!! I completed "Introduction to Databases" from Stanford Online (last March 15, 2014)!

"Introduction to Databases" About page:

https://class.stanford.edu/courses/Engineering/db/2014_1/about

What is the ii/IV - V/IV - IV progression

ii/IV is read as "two of four" which is Gm7 in the key of C.

V/IV is read as "five of four" which is C7 in the key of C.

and IV is F in the key of C.

You can find an example of this by Greg Howlett on thins link.

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Free Lessons for Chruch Pianists:
Free lessons, tips and downloads for church pianists

DVD Courses (Reharmonization, Play by Ear!, Arranging, Accompanying, Theory for Church Pianists, etc.):
Over 30 hours of DVD instruction for church pianists

How to install Ruby on Rails offline in Windows 7 and use WEBrick as web server

When online

1. Download railsinstaller-2.2.1.exe from http://railsinstaller.org/
2. Download uglifier-2.2.1.gem from http://rubygems.org/gems/uglifier

When offline (on another computer)

1. Execute railsinstaller-2.2.1.exe
2. Open command window
3. Using the command window, navigate to the directory where uglifier-2.2.1.gem is saved

                                 cd <path where uglifier-2.2.1.gem is saved>

4. Type the following command:

                                gem install --local uglifier-2.2.1.gem

5. Create your Rails site with the following command:

                                rails new <name of your site>

6. Using the command window, navigate to the directory of your site:

                                cd <path of your site>

7. While inside your site's directory, run the web server (WEBrick):

                                rails server

8. Open your web browser to view your site: http://localhost:3000/

From Nand to Tetris - My Solutions to the Projects

I have created a repository to contain my solutions to the projects of the course "From Nand to Tetris"
(You can also get the reading materials and projec files at http://www.cs.huji.ac.il/course/2002/nand2tet/projects.html)

Here is the repository of my solutions: https://github.com/jboyflaga/Nand2Tetris
(Some of my solutions are not very good even though the output is still correct. Be sure to also look at other people's solutions for reference.)

UPDATE (November 17, 2013): I deleted the GitHub repository of my solutions to the Nand2Tetris projects 1 to 8 because someone who is teaching it (Alex Lipov) requested for it to be removed because it violated the course terms (http://www.nand2tetris.org/terms.php).

If you want to know how to start the course just read the whole Chapter 1 available in http://www.nand2tetris.org/course.php or http://www.cs.huji.ac.il/course/2002/nand2tet/projects/proj1.html. You will know what to do especially after you read the last part of chapter 1.

Enjoy!!!

From Nand to Tetris - Project 4 (Fill)

This is my solution to the exercises (Fill) in Project 4 of the free course From Nand to Tetris
Other Links:
http://www.cs.huji.ac.il/course/2002/nand2tet/projects.html

// Runs an infinite loop that listens to the keyboard input. 
// When a key is pressed (any key), the program blackens the screen,
// i.e. writes "black" in every pixel. When no key is pressed, the
// program clears the screen, i.e. writes "white" in every pixel.

// (RESET_SCREEN_COUNTER)
 // @SCREEN
 // D=A
 // @counter
 // M=D    // counter = SCREEN

(LISTEN_FOR_NO_KEY_PRESS)
 // reset screen counter
 @SCREEN
 D=A
 @counter
 M=D
 
 // if KBD == 0 jump to CLEAR_SCREEN
 @KBD
 D=M
 @CLEAR_SCREEN
 D;JEQ

 // loop (keep on checking if KBD == 0
 @LISTEN_FOR_NO_KEY_PRESS
 0;JEQ

(LISTEN_FOR_KEY_PRESS)
 // reset screen counter
 @SCREEN
 D=A
 @counter
 M=D
 
 // if KBD > 0 jump to BLACKEN_SCREEN
 @KBD
 D=M
 @BLACKEN_SCREEN
 D;JGT
 
 // loop (keep on checking if KBD > 0
 @LISTEN_FOR_KEY_PRESS
 0;JEQ
 
(BLACKEN_SCREEN) 
 // blacken 16-bit memory location
 @counter
 A=M    // A = counter
 M=-1   // blacken current memory location
  
 // if KBD == 0 jump to LISTEN_FOR_NO_KEY_PRESS (to reset counter)
 @KBD
 D=M
 @LISTEN_FOR_NO_KEY_PRESS
 D;JEQ

 // increment counter
 @counter
 M=M+1
 
 // check if you have reached memory location 24575 (the final address for the screen)
 D=M
 @24575
 D=A-D
 @LISTEN_FOR_NO_KEY_PRESS
 D;JLT   // goto LISTEN_FOR_NO_KEY_PRESS if counter > 24575
 
 // loop BLACKEN_SCREEN if you have NOT reached memory location 24575
 @BLACKEN_SCREEN
 0;JEQ 

(CLEAR_SCREEN)
 // clear 16-bit memory location
 @counter
 A=M    // A = counter
 M=0    // clear current memory location
 
 // if KBD > 0 jump to LISTEN_FOR_KEY_PRESS (to reset counter)
 @KBD
 D=M
 @LISTEN_FOR_KEY_PRESS
 D;JGT
 
 // increment counter
 @counter
 M=M+1
 
 // check if you have reached memory location 24575 (the final address for the screen)
 D=M
 @24575
 D=A-D
 @LISTEN_FOR_KEY_PRESS
 D;JLT   // goto LISTEN_FOR_KEY_PRESS if counter > 24575
 
 // loop CLEAR_SCREEN if you have NOT reached memory location 24575
 @CLEAR_SCREEN
 0;JEQ

The Humans Project - using the HotTowel SPA template

This is a very very simple app I created to practice developing a SPA (Single Page App).

I used the HotTowel SPA template created by John Papa.
To learn more about HotTowel go to http://www.johnpapa.net/hottowel/.

HotTowel uses the Durandal SPA framework
To know more about Durandal go to the folowing pages:
http://durandaljs.com/pages/get-started
http://durandaljs.com/pages/videos/

The project is available on github.
 
(This is not yet finished)
(And pardon the look of the pages... I'm not a very good designer...)

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Free Lessons for Chruch Pianists:
Free lessons, tips and downloads for church pianists

DVD Courses (Reharmonization, Play by Ear!, Arranging, Accompanying, Theory for Church Pianists, etc.):
Over 30 hours of DVD instruction for church pianists