Saturday, October 29, 2011

Play Binary Games to Learn ICT




Direct Links

http://forums.cisco.com/CertCom/game/binary_game.swf

http://britton.disted.camosun.bc.ca/binary.swf

Thursday, October 27, 2011

HTML Color Codes

#EEEEEE #DDDDDD #CCCCCC #BBBBBB #AAAAAA #999999
#888888 #777777 #666666 #555555 #444444 #333333
#000000 #000033 #000066 #000099 #0000CC #0000FF
#330000 #330033 #330066 #330099 #3300CC #3300FF
#660000 #660033 #660066 #660099 #6600CC #6600FF
#990000 #990033 #990066 #990099 #9900CC #9900FF
#CC0000 #CC0033 #CC0066 #CC0099 #CC00CC #CC00FF
#FF0000 #FF0033 #FF0066 #FF0099 #FF00CC #FF00FF
#003300 #003333 #003366 #003399 #0033CC #0033FF
#333300 #333333 #333366 #333399 #3333CC #3333FF
#663300 #663333 #663366 #663399 #6633CC #6633FF
#993300 #993333 #993366 #993399 #9933CC #9933FF
#CC3300 #CC3333 #CC3366 #CC3399 #CC33CC #CC33FF
#FF3300 #FF3333 #FF3366 #FF3399 #FF33CC #FF33FF
#006600 #006633 #006666 #006699 #0066CC #0066FF
#336600 #336633 #336666 #336699 #3366CC #3366FF
#666600 #666633 #666666 #666699 #6666CC #6666FF
#996600 #996633 #996666 #996699 #9966CC #9966FF
#CC6600 #CC6633 #CC6666 #CC3399 #CC66CC #CC66FF
#FF6600 #FF6633 #FF6666 #FF6699 #FF66CC #FF66FF
#009900 #009933 #009966 #009999 #0099CC #0099FF
#339900 #339933 #339966 #339999 #3399CC #3399FF
#669900 #669933 #669966 #669999 #6699CC #6699FF
#999900 #999933 #999966 #999999 #9999CC #9999FF
#CC9900 #CC9933 #CC9966 #CC9999 #CC99CC #CC99FF
#FF9900 #FF9933 #FF9966 #FF9999 #FF99CC #FF99FF
#00CC00 #00CC33 #00CC66 #00CC99 #00CCCC #00CCFF
#33CC00 #33CC33 #33CC66 #33CC99 #33CCCC #33CCFF
#66CC00 #66CC33 #66CC66 #66CC99 #66CCCC #66CCFF
#99CC00 #99CC33 #99CC66 #99CC99 #99CCCC #99CCFF
#CCCC00 #CCCC33 #CCCC66 #CCCC99 #CCCCCC #CCCCFF
#FFCC00 #FFCC33 #FFCC66 #FFCC99 #FFCCCC #FFCCFF
#00FF00 #00FF33 #00FF66 #00FF99 #00FFCC #00FFFF
#33FF00 #33FF33 #33FF66 #33FF99 #33FFCC #33FFFF
#66FF00 #66FF33 #66FF66 #66FF99 #66FFCC #66FFFF
#99FF00 #99FF33 #99FF66 #99FF99 #99FFCC #99FFFF
#CCFF00 #CCFF33 #CCFF66 #CCFF99 #CCFFCC #CCFFFF
#FFFF00 #FFFF33 #FFFF66 #FFFF99 #FFFFCC #FFFFFF


The following chart shows the HTML named color names in alphabetical border.



Aliceblue


#F0F8FF
Antiquewhite


#FAEBD7
Aqua


#00FFFF
Aquamarine


#7FFFD4
Azure


#F0FFFF
Beige


#F5F5DC
Bisque


#FFE4C4
Black


#000000
Blanchedalmond


#FFEBCD
Blue


#0000FF
Blueviolet


#8A2BE2
Brown


#A52A2A
Burlywood


#DEB887
Cadetblue


#5F9EA0
Chartreuse


#7FFF00
Chocolate


#D2691E
Coral


#FF7F50
Cornflowerblue


#6495ED
Cornsilk


#FFF8DC
Crimson


#DC143C
Cyan


#00FFFF
Darkblue


#00008B
Darkcyan


#008B8B
Darkgoldenrod


#B8860B
Darkgray


#A9A9A9
Darkgreen


#006400
Darkkhaki


#BDB76B
Darkmagenta


#8B008B
Darkolivegreen


#556B2F
Darkorange


#FF8C00
Darkorchid


#9932CC
Darkred


#8B0000
Darksalmon


#E9967A
Darkseagreen


#8FBC8F
Darkslateblue


#483D8B
Darkslategray


#2F4F4F
Darkturquoise


#00CED1
Darkviolet


#9400D3
Deeppink


#FF1493
Deepskyblue


#00BFFF
Dimgray


#696969
Dodgerblue


#1E90FF
Firebrick


#B22222
Floralwhite


#FFFAF0
Forestgreen


#228B22
Fuchsia


#FF00FF
Gainsboro


#DCDCDC
Ghostwhite


#F8F8FF
Gold


#FFD700
Goldenrod


#DAA520
Gray


#808080
Green


#008000
Greenyellow


#ADFF2F
Honeydew


#F0FFF0
Hotpink


#FF69B4
Indianred


#CD5C5C
Indigo


#4B0082
Ivory


#FFFFF0
Khaki


#F0E68C
Lavender


#E6E6FA
Lavenderblush


#FFF0F5
Lawngreen


#7CFC00
Lemonchiffon


#FFFACD
Lightblue


#ADD8E6
Lightcoral


#F08080
Lightcyan


#E0FFFF
Lightgoldenrodyellow


#FAFAD2
Lightgreen


#90EE90
Lightgrey


#D3D3D3
Lightpink


#FFB6C1
Lightsalmon


#FFA07A
Lightseagreen


#20B2AA
Lightskyblue


#87CEFA
Lightslategray


#778899
Lightsteelblue


#B0C4DE
Lightyellow


#FFFFE0
Lime


#00FF00
Limegreen


#32CD32
Linen


#FAF0E6
Magenta


#FF00FF
Maroon


#800000
Mediumaquamarine


#66CDAA
Mediumblue


#0000CD
Mediumorchid


#BA55D3
Mediumpurple


#9370D8
Mediumseagreen


#3CB371
Mediumslateblue


#7B68EE
Mediumspringgreen


#00FA9A
Mediumturquoise


#48D1CC
Mediumvioletred


#C71585
Midnightblue


#191970
Mintcream


#F5FFFA
Mistyrose


#FFE4E1
Moccasin


#FFE4B5
Navajowhite


#FFDEAD
Navy


#000080
Oldlace


#FDF5E6
Olive


#808000
Olivedrab


#688E23
Orange


#FFA500
Orangered


#FF4500
Orchid


#DA70D6
Palegoldenrod


#EEE8AA
Palegreen


#98FB98
Paleturquoise


#AFEEEE
Palevioletred


#D87093
Papayawhip


#FFEFD5
Peachpuff


#FFDAB9
Peru


#CD853F
Pink


#FFC0CB
Plum


#DDA0DD
Powderblue


#B0E0E6
Purple


#800080
Red


#FF0000
Rosybrown


#BC8F8F
Royalblue


#4169E1
Saddlebrown


#8B4513
Salmon


#FA8072
Sandybrown


#F4A460
Seagreen


#2E8B57
Seashell


#FFF5EE
Sienna


#A0522D
Silver


#C0C0C0
Skyblue


#87CEEB
Slateblue


#6A5ACD
Slategray


#708090
Snow


#FFFAFA
Springgreen


#00FF7F
Steelblue


#4682B4
Tan


#D2B48C
Teal


#008080
Thistle


#D8BFD8
Tomato


#FF6347
Turquoise


#40E0D0
Violet


#EE82EE
Wheat


#F5DEB3
White


#FFFFFF
Whitesmoke


#F5F5F5
Yellow


#FFFF00
YellowGreen


#9ACD32

Monday, October 24, 2011

Quantum computers at Nano Scale

Quantum computers will process information ultra faster than silicon-based computers. In the near future microprocessors would be of atomic scale of quantum computers. They will use the power of atoms and molecules to perform memory and processing tasks.


The basic quantum computers built by scientists perform certain calculations and promise a new era of computing.



In 1930 Alan Turing introduced a theoretical device for modern computers. Alan Turing Machine consists of tape of unlimited length and divided into small squares. Each square will 1 or 0 or be left blank. A read-write device reads these symbols and blanks, and gives the machine its instructions to perform a certain program.


In a quantum Turing machine, the difference is that the tape exists in a quantum state. The normal Turing machine can only perform one calculation at a time but a quantum Turing machine can perform many calculations at once.


Quantum computers are not limited to two states as it uses atoms, ions, photons or electrons to act as computer memory and a processor. A 30-qubit quantum computer could run at 10 teraflops (trillions of floating-point operations per second).


Marcus Chown, writes to New Scientist as Quantum bubbles are the key to quantum computing.


As he says, It seems that bubbles of electrons lined up in ultracold liquid helium could be used to build a quantum computer capable of carrying out a staggering 1030 simultaneous calculations.



Weijun Yao of Brown University in Providence, Rhode Island, wants to replace atoms with curious things called electron bubbles.


To make an electron bubble, he suggest to start with liquid helium that has been cooled below 2.17 kelvin so that it behaves like a superfluid, a state of matter with zero viscosity. Now inject a fast-moving electron into the superfluid.

When the electron eventually slows to a halt after numerous collisions with helium atoms, it creates a cavity about 3.8 nanometres across by repelling nearly 700 atoms' worth of helium around it.



It is this cavity that makes the electron bubble so very valuable. In a quantum computer, the quantum entities need to be isolated from their surroundings to preserve their fragile states. "What could be more isolated than an electron in a bubble?" asks Yao. "The electron inside each bubble interacts very weakly with the background helium atoms."


Yao says that an electron's spin can exist in both states at the same time, enabling the qubit to be both 0 and 1.

Because each qubit carries two values, a quantum computer with two qubits could carry out four parallel calculations, one with three qubits eight calculations, and so on. "I see no major technical obstacles to the system I envisage working with 100 qubits," says Yao. "That means it could do 1000 billion billion billion operations all at once." writes 
Marcus Chown.

Friday, October 7, 2011

ICT සිංහල පාරිභාෂක වදන් මාලාව : Sinhala ICT Glossary

Sinhala ICT Glossary

පහත දැක්වෙන සිංහල තොරතුරු තාක්‍ෂණ හා සන්නිවේදන පාරිභාෂක වදන් මාලාව රාජ්‍ය භාෂා දෙපාර්ථමේන්තුවෙන් නිකුත් කරන ලද්දකි. මෙම වදන් මාලාවට අමතරව ICTA, කොළඹ හා මොරටුව විශ්ව විද්‍යාලද, පෞද්ගලික අංශයෙන්ද, අධ්‍යාපන අමාත්‍යංශයෙන්ද, ජාතික අධ්‍යාපන ආයතනයෙන්ද නිකුත් කරන ලද වදන් මාලා ලේඛනද පවතී. එක් එන වදන් මාලා බොහෝ දුරට සමාන වන අතර සමහර වදන් තරමක් වෙනස් ලෙස යොදාගනී. උසස් පෙළ තොරතුරු තාක්‍ෂණ හා සන්නිවේදන විභාග වදදලදී යොදා ගැනෙන වදන් 1000 ක් පමණ ඇති අතර, ඒවාද Bit, Bit Speed, Bit Pattern ආදී ලෙස සමහර වදන් නැවත නැවත භාවිතා වන නිසාත්, වරහන් තුල ඉංග්‍රීසි වචනය දෘඩකය (Hard Disk) ලෙස ලබාදෙන නිසාත් මතක තබාගත යුතු වචන ගණන සීමා සහිතය. 

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