- IT ගුරුගෙදර (Sinhala And Tamil)
Wednesday, November 12, 2014
Sunday, November 9, 2014
A/L ICT Course Out Line
Competency 01
Explores the basic concepts of ICT together with its role and applicability in today’s knowledge based society.
Module 1 Notes: Download
Competency 02
Explores the evolution of computers so as to be able to describe and compare the performance of a modern computer.
Module 2 Notes: Download
Competency 03
Investigates how data are represented in computers and exploits them in arithmetic and logic operations.
Module 3 Notes: Download
Competency 04
Uses Logic Gates to design basic Digital Circuits and Devices in Computers.
Module 4 Notes: Download
Competency 05
Uses Memory Management to improve performance of a Computer.
Module 5 Notes: Download
Competency 06
Uses Operating Systems to manage the overall functionality of computers.
Module 6 Notes: Download
Competency 07
Uses Programming Languages to program computers to solve problems.
Module 7 Notes: Download
Competency 08
Explores the use of Data Communication & Computer Network Technologies for
effective communication of data & voice and resource sharing.
Module 8 Notes: Download
Competency 09
Designs and develops database systems to manage data efficiently and effectively.
Module 9 Notes: Download
Competency 10
Develops websites incorporating multimedia technologies.
Module 10 Notes: Download
Competency 11
Explores the systems concept and uses Structured System Analysis and design
Methodology (SSADM) in developing Information Systems.
Module 11 Notes: Download
Competency 12
Explores applicability of ICT to today’s business organizations and the
competitive marketplace.
Module 12 Notes: Download
Competency 13
Explores new trends and future directions of ICT.
Module 13 Notes: Download
Competency 14
Designs and Implements a simple Information System as the Project.
Saturday, January 19, 2013
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.
source-http://advanced-level-ict.blogspot.com
The basic quantum computers built by scientists perform certain calculations and promise a new era of computing.
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.
source-http://advanced-level-ict.blogspot.com
Wednesday, January 9, 2013
A/L ICT
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The current Sri Lankan Secondary Education System has been substantially exposed to ICT through various programs including CAL, ICT for GCE (O/L) and GIT at grade 12.
Consequently, students have shown a growing interest in ICT education and some have, in fact, performed excellently at international competitions in ICT, proving their high level of competence.
At present there is no main subject area under ICT for GCE (A/L). Therefore, GCE (O/L) qualified students, interested in developing their career path in ICT, are deprived of the opportunity of learning it at the GCE (A/L). Introducing ICT as a subject for A/L would set a national standard in ICT education at school level and provide the path to higher education at tertiary level.
Furthermore, students who fail to earn a placement in a university would be in possession of a substantial foundation to build up their academic and professional careers.
Source (NIE)
- G.C.E A/L ICT SYLLABUS-ENGLISH
Click here to download English version of G.C.E. A/L ICT Syllabus
- G.C.E A/L ICT SYLLABUS-SINHALA
Click here to download Sinhala version of G.C.E. A/L ICT Syllabus
- G.C.E A/L ICT SYLLABUS-TAMIL
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