Thursday, February 28, 2013
Nonsense
...I just realised that I still have my blog.........
No I'm not gonna upload this regularly.
No I'm not gonna blog like how I Insta (which is relatively sorta often)
No I'm not gonna go on this very often either.
Personally, I don't do blogging.
But eitherways...
Reports are not fun.
Especially when an event happened three months ago.
But who doesn't need a bit of sunshine in their lives anyway...
And 80% chocolate is awesome...
Bitter and sweet and tasteless...
(BTW, this is all typed in the span of say the past hour and the next... three?)
Gah... just ignore whatever... Not that anyone's gonna read it anyway...
Saturday, February 27, 2010
Freaking Exams
Its the time again where every other student is plagued with ...FREAKING EXAMS!!!!!!
Personally, I'm freaking out already. That's why I'm here at home trying to study as much as I can instead of going to KL for a joyride. And the worst is that it's starting on Monday. That gives me less than 48 hours to study.
Oh well. Guess I have to just try my best and hope everything goes well. After all it's not a major exam like PMR or SPM or even the mid-term exam.
So, to everyone out there who is and will be sitting for their exams....Good Luck!
Personally, I'm freaking out already. That's why I'm here at home trying to study as much as I can instead of going to KL for a joyride. And the worst is that it's starting on Monday. That gives me less than 48 hours to study.
Oh well. Guess I have to just try my best and hope everything goes well. After all it's not a major exam like PMR or SPM or even the mid-term exam.
So, to everyone out there who is and will be sitting for their exams....Good Luck!
Computer software
As mentioned before, software is the information that the computer uses to get the job done. It is also a general term primarily used for digitally stored data such as computer programs and other kinds of information read and written by computers.
Practical computer systems divide software systems into three major classes:
(i)System software
System software helps run the computer hardware and computer system. It includes a combination of the following:
* device drivers
* operating systems
* servers
* utilities
* windowing systems
The purpose of systems software is to unburden the applications programmer from the often complex details of the particular computer being used, including such accessories as communications devices, printers, device readers, displays and keyboards, and also to partition the computer's resources such as memory and processor time in a safe and stable manner. Examples are- Windows XP, Linux, and Mac OS X.
(ii)Programming software
Programming software usually provides tools to assist a programmer in writing computer programs, and software using different programming languages in a more convenient way. The tools include:
* compilers
* debuggers
* interpreters
* linkers
* text editors
An Integrated development environment (IDE) is a single application that attempts to manage all these functions.
(iii)Application software
Application software allows end users to accomplish one or more specific (not directly computer development related) tasks. Typical applications include:
* industrial automation
* business software
* video games
* quantum chemistry and solid state physics software
* telecommunications (i.e., the Internet and everything that flows on it)
* databases
* educational software
* medical software
* military software
* molecular modeling software
* image editing
* spreadsheet
* simulation software
* Word processing
* Decision making software
Application software exists for and has impacted a wide variety of topics.
There are also 3 basic types of software:
(i)Commercial software:
Commercial software comes prepackaged and is available from software stores and through the Internet.
(ii)Shareware:
Shareware is software developed by individual and small companies that cannot afford to market their software world wide or by a company that wants to release a demonstration version of their commercial product. You will have an evaluation period in which you can decide whether to purchase the product or not. Shareware software often is disabled in some way and has a notice attached to explain the legal requirements for using the product.
(iii)Open Source software:
Open Source software is created by generous programmers and released into the public domain for public use. There is usually a copyright notice that must remain with the software product. Open Source software is not public domain in that the company or individual that develops the software retains ownership of the program but the software can be used freely. Many popular Open Source applications are being developed and upgraded regularly by individuals and companies that believe in the Open Source concept.
*The information above are sourced from:
(i)http://www.grassrootsdesign.com/intro/software.php
(ii)http://en.wikipedia.org/wiki/Computer_software#Types_of_software
Practical computer systems divide software systems into three major classes:
(i)System software
System software helps run the computer hardware and computer system. It includes a combination of the following:
* device drivers
* operating systems
* servers
* utilities
* windowing systems
The purpose of systems software is to unburden the applications programmer from the often complex details of the particular computer being used, including such accessories as communications devices, printers, device readers, displays and keyboards, and also to partition the computer's resources such as memory and processor time in a safe and stable manner. Examples are- Windows XP, Linux, and Mac OS X.
(ii)Programming software
Programming software usually provides tools to assist a programmer in writing computer programs, and software using different programming languages in a more convenient way. The tools include:
* compilers
* debuggers
* interpreters
* linkers
* text editors
An Integrated development environment (IDE) is a single application that attempts to manage all these functions.
(iii)Application software
Application software allows end users to accomplish one or more specific (not directly computer development related) tasks. Typical applications include:
* industrial automation
* business software
* video games
* quantum chemistry and solid state physics software
* telecommunications (i.e., the Internet and everything that flows on it)
* databases
* educational software
* medical software
* military software
* molecular modeling software
* image editing
* spreadsheet
* simulation software
* Word processing
* Decision making software
Application software exists for and has impacted a wide variety of topics.
There are also 3 basic types of software:
(i)Commercial software:
Commercial software comes prepackaged and is available from software stores and through the Internet.
(ii)Shareware:
Shareware is software developed by individual and small companies that cannot afford to market their software world wide or by a company that wants to release a demonstration version of their commercial product. You will have an evaluation period in which you can decide whether to purchase the product or not. Shareware software often is disabled in some way and has a notice attached to explain the legal requirements for using the product.
(iii)Open Source software:
Open Source software is created by generous programmers and released into the public domain for public use. There is usually a copyright notice that must remain with the software product. Open Source software is not public domain in that the company or individual that develops the software retains ownership of the program but the software can be used freely. Many popular Open Source applications are being developed and upgraded regularly by individuals and companies that believe in the Open Source concept.
*The information above are sourced from:
(i)http://www.grassrootsdesign.com/intro/software.php
(ii)http://en.wikipedia.org/wiki/Computer_software#Types_of_software
Main computer system
1. Monitor
The monitor shows information on the screen when you type.This is called outputting information. When the computer needs more information it will display a message on the screen, usually through a dialog box. Monitors come in many types and sizes. The resolution of the monitor determines the sharpness of the screen. The resolution can be adjusted to control the screen's display.
A computer monitor image is made up of pixels(dots). In general, the higher the resolution, the better the image. The smaller the dots pitch (typically from 0.25mm to 0.31 mm), the better the image.
3. Speakers
Speakers giveout information in the form of sound. They range widely in quality and price. They are typically packed with computer systems in small plastic boxes with mediocre sound quality. The internal amplifiers requires an external power source, known as 'wall-wart'.
4. Mouse
Most modern computers today are run using a mouse controlled pointer. Generally if the mouse has two buttons the left one is used to select objects and text and the right one is used to access menus. If the mouse has one button (Mac for instance) it controls all the activity and a mouse with a third button can be used by specific software programs. One type of mouse has a round ball under the bottom of the mouse that rolls and turns two wheels which control the direction of the pointer on the screen. Another type of mouse uses an optical system to track the movement of the mouse.
5. System Unit
A system unit, also known as a base unit, is the main body of a desktop computer, typically consisting of a plastic enclosure containing the motherboard, power supply, cooling fans, internal disk drives, and the memory modules and expansion cards that are plugged into the motherboard, such as video and network cards.
6. Printer
The printer takes the information on your screen and transfers it to paper or a hard copy. There are many different types of printers with various levels of quality. The three basic types of printer are:
(i)Dot matrix printers:
Dot matrix printers work like a typewriter transferring ink from a ribbon to paper with a series or 'matrix' of tiny pins.
(ii)Ink jet printers:
Ink jet printers work like dot matrix printers but fires a stream of ink from a cartridge directly onto the paper.This type of printer is the most economical for colour output.
(iii)Laser printers:
Laser printers use the same technology as a photocopier using heat to transfer toner onto paper. The speed of a laser printer is typically abouut 8 ppm (page per minute).
*The information above are sourced from:
(i) http://www.grassrootsdesign.com/intro/hardware.php
(ii) http://en.wikipedia.org/wiki/System_unit
The monitor shows information on the screen when you type.This is called outputting information. When the computer needs more information it will display a message on the screen, usually through a dialog box. Monitors come in many types and sizes. The resolution of the monitor determines the sharpness of the screen. The resolution can be adjusted to control the screen's display.
A computer monitor image is made up of pixels(dots). In general, the higher the resolution, the better the image. The smaller the dots pitch (typically from 0.25mm to 0.31 mm), the better the image.
Most desktop computers use a monitor with a cathode tube or liquid crystal display. Most notebooks use a liquid crystal display monitor.
To get the full benefit of today's software with full colour graphics and animation, computers need a color monitor with a display or graphics card.
2. Keyboard
The keyboard is the main input device for text and commands. There are many different keyboard layouts and sizes with the most common for Latin based languages being the QWERTY layout (named for the first 6 keys). The standard keyboard has 101 keys. Notebooks have embedded keys accessible by special keys or by pressing key combinations (CTRL or Command and P for example). Ergonomically designed keyboards are designed to make typing easier. Hand held devices have various and different keyboard configurations and touch screens.3. Speakers
Speakers giveout information in the form of sound. They range widely in quality and price. They are typically packed with computer systems in small plastic boxes with mediocre sound quality. The internal amplifiers requires an external power source, known as 'wall-wart'.
4. Mouse
Most modern computers today are run using a mouse controlled pointer. Generally if the mouse has two buttons the left one is used to select objects and text and the right one is used to access menus. If the mouse has one button (Mac for instance) it controls all the activity and a mouse with a third button can be used by specific software programs. One type of mouse has a round ball under the bottom of the mouse that rolls and turns two wheels which control the direction of the pointer on the screen. Another type of mouse uses an optical system to track the movement of the mouse.
5. System Unit
A system unit, also known as a base unit, is the main body of a desktop computer, typically consisting of a plastic enclosure containing the motherboard, power supply, cooling fans, internal disk drives, and the memory modules and expansion cards that are plugged into the motherboard, such as video and network cards.
6. Printer
The printer takes the information on your screen and transfers it to paper or a hard copy. There are many different types of printers with various levels of quality. The three basic types of printer are:
(i)Dot matrix printers:
Dot matrix printers work like a typewriter transferring ink from a ribbon to paper with a series or 'matrix' of tiny pins.
(ii)Ink jet printers:
Ink jet printers work like dot matrix printers but fires a stream of ink from a cartridge directly onto the paper.This type of printer is the most economical for colour output.
(iii)Laser printers:
Laser printers use the same technology as a photocopier using heat to transfer toner onto paper. The speed of a laser printer is typically abouut 8 ppm (page per minute).
*The information above are sourced from:
(i) http://www.grassrootsdesign.com/intro/hardware.php
(ii) http://en.wikipedia.org/wiki/System_unit
Friday, February 26, 2010
Introduction to computers
There are 2 basic parts of a computer.
(i) Hardware:
The hardware are the parts of computer itself including the Central Processing Unit (CPU) and related microchips and micro-circuitry, keyboards, monitors, case and drives (hard, CD, DVD, floppy, optical, tape, etc...). Other extra parts called peripheral components or devices include mouse, printers, modems, scanners, digital cameras and cards (sound, colour, video) etc... Together they are often referred to as a personal computer.
(ii) Software:
The software is the information that the computer uses to get the job done.
There are also 2 types of computers ( based on their operational principle)
(i)Analog Computers:
The analog computer is almost an extinct type of computer these days. It is different from a digital computer in respect that it can perform numerous mathematical operations simultaneously. It is also unique in terms of operation as it utilizes continuous variables for the purpose of mathematical computation. It utilizes mechanical, hydraulic, or electrical energy or operation.
(ii)Hybrid computers: These types of computers are, as the name suggests, a combination of both Analog and Digital computers. The Digital computers which work on the principle of binary digit system of “0” and “1” can give very precise results. But the problem is that they are too slow and incapable of large scale mathematical operation. In the hybrid types of computers the Digital counterparts convert the analog signals to perform Robotics and Process control.
Apart from that, computers are also categorized on the basis of physical structures and the purpose of their use.
(i)The Mainframe Computer:
These are computers used by large organizations like meteorological surveys and statistical institutes for performing bulk mathematical computations. They are core computers which are used for desktop functions of over one hundred people simultaneously
(i)The Microcomputer:
These are the most frequently used computers better known by the name of “Personal computers”. This is the type of computer meant for public use.
(iii)The Mini computer:
Mini computers like the mainframe computers are used by business organization. The difference being that it can support the simultaneous working of up to 100 users and is usually maintained in business organizations for the maintenance of accounts and finances.
*All the information are sourced from:
(i) http://www.grassrootsdesign.com/intro/software.php
(ii) http://www.mapsofworld.com/referrals/computers/types-of-computers/
(i) Hardware:
The hardware are the parts of computer itself including the Central Processing Unit (CPU) and related microchips and micro-circuitry, keyboards, monitors, case and drives (hard, CD, DVD, floppy, optical, tape, etc...). Other extra parts called peripheral components or devices include mouse, printers, modems, scanners, digital cameras and cards (sound, colour, video) etc... Together they are often referred to as a personal computer.
(ii) Software:
The software is the information that the computer uses to get the job done.
There are also 2 types of computers ( based on their operational principle)
(i)Analog Computers:
The analog computer is almost an extinct type of computer these days. It is different from a digital computer in respect that it can perform numerous mathematical operations simultaneously. It is also unique in terms of operation as it utilizes continuous variables for the purpose of mathematical computation. It utilizes mechanical, hydraulic, or electrical energy or operation.
(ii)Hybrid computers: These types of computers are, as the name suggests, a combination of both Analog and Digital computers. The Digital computers which work on the principle of binary digit system of “0” and “1” can give very precise results. But the problem is that they are too slow and incapable of large scale mathematical operation. In the hybrid types of computers the Digital counterparts convert the analog signals to perform Robotics and Process control.
Apart from that, computers are also categorized on the basis of physical structures and the purpose of their use.
(i)The Mainframe Computer:
These are computers used by large organizations like meteorological surveys and statistical institutes for performing bulk mathematical computations. They are core computers which are used for desktop functions of over one hundred people simultaneously
(i)The Microcomputer:
These are the most frequently used computers better known by the name of “Personal computers”. This is the type of computer meant for public use.
(iii)The Mini computer:
Mini computers like the mainframe computers are used by business organization. The difference being that it can support the simultaneous working of up to 100 users and is usually maintained in business organizations for the maintenance of accounts and finances.
*All the information are sourced from:
(i) http://www.grassrootsdesign.com/intro/software.php
(ii) http://www.mapsofworld.com/referrals/computers/types-of-computers/
