Monday, February 23, 2009
Sunday, February 22, 2009
Testtttt!
Dear Year7 students..
be Prepared!! Test Test Test..
and guys, kamu agree if teacher adakan an extra class on Friday, for your project sama lesson, pasal kmau actually ketinggalan syllabus dah ni... so how?
if anyone agree or disagree please do response, leave ur msgs arah chatbox or give comments (click on "comment" below this post).
Have a great day!
be Prepared!! Test Test Test..
and guys, kamu agree if teacher adakan an extra class on Friday, for your project sama lesson, pasal kmau actually ketinggalan syllabus dah ni... so how?
if anyone agree or disagree please do response, leave ur msgs arah chatbox or give comments (click on "comment" below this post).
Have a great day!
National Day Rehearsal
This whole week.. from 16th until 21st we were having a national day march past rehearsal, so the test got to be extended! but guys.. u still need to prepare for the coming test next week!
same topic as mention and do read and try the revision paper ive given you.
here some picture taken during the rehearsal.
same topic as mention and do read and try the revision paper ive given you.
here some picture taken during the rehearsal.
Thursday, February 19, 2009
Sofware
To dearest Fatin and others who still confused about software:
A software is a sets of instructions that tells the computer how to perform a specific tasks. Another name for software is Program.
For example; you wanted to play a game, you need to install the program from the game software (usually CD), in order to know the rules and how to play that game.
Installing the program means that you are copying the program or instructions that are stored on the CD on to your computer's hard drive.
Software/ program can be divided into two types:
1. System Software
2. Application Software
1. System Software - Includes the a. operating system and all the b. utilities that enable the computer to function.
a. Operating System (OS)A software is a sets of instructions that tells the computer how to perform a specific tasks. Another name for software is Program.
For example; you wanted to play a game, you need to install the program from the game software (usually CD), in order to know the rules and how to play that game.
Installing the program means that you are copying the program or instructions that are stored on the CD on to your computer's hard drive.
Software/ program can be divided into two types:
1. System Software
2. Application Software
1. System Software - Includes the a. operating system and all the b. utilities that enable the computer to function.
The most important program that run on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
Examples of OS: Windows XP Home, Windows Vista, Linux, Machintosh (Apple)
Utilities is basically for managing computer resources , and for maintenance of the computer, examples od computer utilities are AVG Anti Virus, McAfee, Kaspersky, Norton Anti Virus, NOD, and so on.
2. Application Software - Is a program that helps users to do many kinds of tasks, Office, Schools, Games or any other entertainment..
Here are some very common types of applications programs and some examples of their uses:
- Word processing - letter writing, essays, writing stories
- Database - address books, mailing lists
- Spreadsheets - storing financial information
- Research - encyclopedias, informational programs
- Entertainment - games, music/video programs
- Education - skill practice games, tutorials, how-to programs
- Desktop Publishing - creating birthday cards, newsletters, etc.
-END-
so, do this helps you understanding software? if no, please do ask again..
=)
so, do this helps you understanding software? if no, please do ask again..
=)
Sunday, February 15, 2009
Topic 6: Computer Care and Safety
Computers, like any other piece of electronic equipment, need special care and attention in order to perform properly and safely. There are several specialized tasks such as defragmenting, scanning and reformatting that computer experts can do to keep the internal system of a computer working well. However, we'll leave these tasks to the experts for now and concentrate on some daily do's and don'ts that any computer user should know.
A Clean Machine
This may seem like a simple topic, but computers require special cleaning even on the outside. Keeping your system free of dust, dirt and liquids is the first step to computer care. Your system's user guide is the best place to find information on how to clean your outer components; but here are some general tips that you should always remember:
- Never spray your monitor screen (or any other computer component) with glass cleaner. Instead, spray a lint-free cloth lightly with glass cleaner, then clean the screen. Be sure to hold the cloth away from the computer when spraying.
- Computer components should be kept as dust-free as possible.
- Canned air or small computer-specific vacuum cleaners are an excellent way to clean keyboards, computer case vents, or around disk drive openings.
- The rubber ball inside the bottom of a mouse may need occasional cleaning. If the mouse does not perform correctly, check your user guide for cleaning directions.
- Never try to remove the cover on your computer to clean inside. Instead, take it to an authorized service technician for cleaning.
- Keep all liquids and food items away from your computer. Liquids and food crumbs can damage delicate electronic circuits. Also, mixing liquids and electronic components can cause serious electrical shock!
- Wash your hands before using the computer to avoid "sticky keys."
- When in doubt about how to clean your computer system, consult your user manual or technical support.
A Shocking Possibility
It is important to remember that your computer is connected to electricity. If you have an Internet connection, that also means that your computer is connected to a telephone line or cable connection. These are also conductive connections. That means that lightning could be conducted to your computer through any of these connections. For safety reasons, you should never use your computer during a storm.
Many computer users purchase surge protectors to safeguard their system. The user plugs computer components into the surge protector, then plugs the surge protector into the wall. Just like the name implies, surge protectors are designed to protect computers against electrical surges or lightning. However, these devices can fail, so it's best to stay clear of the computer during storms.
Also, as mentioned earlier, electricity and liquids don't mix. Keep water and other liquids away from the computer system. This includes drinks, water guns, fish bowls and cleaning fluids.
Beware of Viruses
Viruses and worms are names for pesky computer-unfriendly programs that can accidentally be downloaded into your system. Some are just a nuisance, but others can crash your system and cause irreparable damage. To avoid these nasty creatures, follow these safety tips:
- Install, use and regularly update virus software
- Never open an e-mail attachment unless you know and trust the person who sent it.
- Do not accept downloads from Internet sites that you don't know and trust.
If you would like to learn more about viruses and antivirus utilities, Check out The Virus Zoo at CNet for some great information!
Avoid Installation Marathons
Let's say that you were given several new computer games for your birthday. Or maybe your parents just bought you a new system and you want to load all your favorite games. Do you sit down and install all of these programs one right after another? No! It may be tempting, but it's not a good idea. Sometimes, installing a new program can cause conflicts within your system. These conflicts will need to be worked out or else the program will have to be uninstalled so that your system will work correctly. If you install 2 or more programs before you realize there is a problem, it will be very difficult to determine what the problem is and which program caused it. Instead, try installing one program, then use your computer long enough to see how your system responds to the installation before loading the next program.
Safe Computing!
Following these guidelines should help you to take good care of your computer system, so that you can get lots of enjoyment from it. Remember, that if you have any questions about your particular system, you should check your user guide or contact technical support.
Topic 6: Computer Care and Safety
Computers, like any other piece of electronic equipment, need special care and attention in order to perform properly and safely. There are several specialized tasks such as defragmenting, scanning and reformatting that computer experts can do to keep the internal system of a computer working well. However, we'll leave these tasks to the experts for now and concentrate on some daily do's and don'ts that any computer user should know.
A Clean Machine
This may seem like a simple topic, but computers require special cleaning even on the outside. Keeping your system free of dust, dirt and liquids is the first step to computer care. Your system's user guide is the best place to find information on how to clean your outer components; but here are some general tips that you should always remember:
- Never spray your monitor screen (or any other computer component) with glass cleaner. Instead, spray a lint-free cloth lightly with glass cleaner, then clean the screen. Be sure to hold the cloth away from the computer when spraying.
- Computer components should be kept as dust-free as possible.
- Canned air or small computer-specific vacuum cleaners are an excellent way to clean keyboards, computer case vents, or around disk drive openings.
- The rubber ball inside the bottom of a mouse may need occasional cleaning. If the mouse does not perform correctly, check your user guide for cleaning directions.
- Never try to remove the cover on your computer to clean inside. Instead, take it to an authorized service technician for cleaning.
- Keep all liquids and food items away from your computer. Liquids and food crumbs can damage delicate electronic circuits. Also, mixing liquids and electronic components can cause serious electrical shock!
- Wash your hands before using the computer to avoid "sticky keys."
- When in doubt about how to clean your computer system, consult your user manual or technical support.
A Shocking Possibility
It is important to remember that your computer is connected to electricity. If you have an Internet connection, that also means that your computer is connected to a telephone line or cable connection. These are also conductive connections. That means that lightning could be conducted to your computer through any of these connections. For safety reasons, you should never use your computer during a storm.
Many computer users purchase surge protectors to safeguard their system. The user plugs computer components into the surge protector, then plugs the surge protector into the wall. Just like the name implies, surge protectors are designed to protect computers against electrical surges or lightning. However, these devices can fail, so it's best to stay clear of the computer during storms.
Also, as mentioned earlier, electricity and liquids don't mix. Keep water and other liquids away from the computer system. This includes drinks, water guns, fish bowls and cleaning fluids.
Beware of Viruses
Viruses and worms are names for pesky computer-unfriendly programs that can accidentally be downloaded into your system. Some are just a nuisance, but others can crash your system and cause irreparable damage. To avoid these nasty creatures, follow these safety tips:
- Install, use and regularly update virus software
- Never open an e-mail attachment unless you know and trust the person who sent it.
- Do not accept downloads from Internet sites that you don't know and trust.
If you would like to learn more about viruses and antivirus utilities, Check out The Virus Zoo at CNet for some great information!
Avoid Installation Marathons
Let's say that you were given several new computer games for your birthday. Or maybe your parents just bought you a new system and you want to load all your favorite games. Do you sit down and install all of these programs one right after another? No! It may be tempting, but it's not a good idea. Sometimes, installing a new program can cause conflicts within your system. These conflicts will need to be worked out or else the program will have to be uninstalled so that your system will work correctly. If you install 2 or more programs before you realize there is a problem, it will be very difficult to determine what the problem is and which program caused it. Instead, try installing one program, then use your computer long enough to see how your system responds to the installation before loading the next program.
Safe Computing!
Following these guidelines should help you to take good care of your computer system, so that you can get lots of enjoyment from it. Remember, that if you have any questions about your particular system, you should check your user guide or contact technical support.
Computer Program
Programmers create a programProgramming allows people and computers to communicate more easily. 
Computer Programs
A program is a set of instructions that tells the computer how to perform a specific task. For example, your favorite computer game is a program. In order for your computer to know how to play that game, you (or your parents) must first install the program from the game software - usually a CD. Installing the program means that you are copying the program or instructions that are stored on the CD on to your computer's hard drive. Programs can also be downloaded from the Internet directly to your hard drive.Many programs (especially games) are very large and would take up lots of memory space on your hard drive. To keep that from happening, these programs are designed to only copy part of the program onto your computer. The rest of the program stays on the software disk. The program cannot be run from your computer unless you have the disk in the disk drive so that RAM can read the rest of the program from it.
Other programs install completely on your hard drive, so that they can be used without running the CD. This is very helpful with programs that are designed to help the user perform a specific task, such as typing a letter or creating a birthday card. Having the program run without the CD, frees up the CD-ROM drive in case you might need to run a clip art CD to add some pizzazz to your creation!
Types of Programs
There are many different types of programs for the computer. They are grouped according to the tasks that they perform. Here are some very common types of programs and some examples of their uses:- Word processing - letter writing, essays, writing stories
- Database - address books, mailing lists
- Spreadsheets - storing financial information
- Research - encyclopedias, informational programs
- Entertainment - games, music/video programs
- Education - skill practice games, tutorials, how-to programs
- Desktop Publishing - creating birthday cards, newsletters, etc.
Programs do much of the work for us, when we perform tasks on the computer. The program instructs the computer in a language that it understands. Think of how hard it would be to dictate a story for someone else to type if that other person spoke a foreign language! You could learn that person's language, but that could take years. The easiest way would be to have a translator. Programs are like translators that allow people to work with computers without learning the computer's language.
Topic 4: Computer System
Computers are made of many electronic components or parts. These components each have a special job and they all work together to make your computer operate. Some components are hidden inside the computer where you can't see them. Others can be seen partly from the outside.
Power It Up!
Every computer needs a power supply to take electricity from your house and convert it into a current that works for your computer. The electrical cord that comes out of your computer comes out of the power supply. When it is plugged into the wall, electricity travels from the electrical wires in your house into the computer's power supply. When your computer is turned on, the power supply allows the converted electricity to travel to other components inside the computer.
Circuits
On the motherboard, you will find several expansion cards. Each of these cards has a special purpose. The sound card contains special circuits for operating the computer's sound. The video card handles graphics that are displayed on the monitor. There are also expansion cards for other computer components including the drives and ports.
The modem is an expansion card that allows computers to talk to each other. A modem plugs the computer in to a phone or cable line so that information can be transferred between computers. Current modems can run up to 56,000 bits per second. Don't know what a bit is? Don't worry, we'll get to that in a later lesson
The brain of a computer is the CPU or Central Processing Unit. Like a brain, it controls information and tells other parts what to do. The type of CPU in a computer also determines how fast that computer can operate. A CPU generates lots of heat, so there is usually a small fan nearby to cool it down.
A very important computer component is the BIOS chip. BIOS stands for Basic Input Output System. In very simple terms, the BIOS chip wakes up the computer when you turn it on and reminds it what parts it has and what they do.
RAM & ROM
RAM stands for Random Access Memory. RAM chips will remember what you tell them and can even change to remember new information. But, when the computer is turned off, RAM forgets everything you told it. This is why it is so important to save your work on a computer - if the computer gets turned off, RAM will lose all of your work!
ROM stands for Read Only Memory. ROM is good at remembering, but cannot change it's mind. It holds information that is built into it. ROM is like reading a library book - lots of information is there, but you can't change it (because you never write in a library book). RAM, on the other hand, is more like a journal - you can write information into the journal. But if you change your mind, you can erase and write in new information.
Ports
Ports are the places on the outside of the computer case where you plug in hardware. On the inside of the case, they are connected to expansion cards. The keyboard, mouse, monitor, and printer all plug into ports. There are also extra ports to plug in extra hardware like joysticks, gamepads, scanners, digital cameras and the like. The ports are controlled by their expansion cards which are plugged into the motherboard and are connected to other components by cables - long, flat bands that contain electrical wiring.
Disk Drives
Disk drives read information off of storage disks. The three most common disk drives are the hard drive, floppy disk drive and CD-ROM. In lesson 1, you learned a bit about the latter two, which are usually installed inside the front of your computer case so that you can get to them from the outside to load the software. The hard drive, however is hidden inside the computer because the disks are not meant to be removed. Information that you save on your computer is stored on these hard disks.
Saturday, February 14, 2009
Computer Studies Year 7 Test
To my dearest year 7 students,
next week, you will be having the topical test on 4 topics, as i have told you earlier.
1. Introduction to Computer
2. Computer lab rules
3. Basic Operation of computer
4. Computer System
The test will be in 5 sections:
Section A: Multiple Choice Questions (10 marks)
Section B: Short Answer Questions (10 marks)
Section C: Matching Components with its functions (5 marks)
Section D: Diagram Questions (5 marks)
Section E: Labelling and Connection test. (10 marks)
I will be giving you only 1 hour and 15 minutes to complete the test, so please do not waste your time, do attempt all the questions. im sure all of you can answer the test if you try the revision test paper that i have given you on saturday.
Best of Luck!
=)
next week, you will be having the topical test on 4 topics, as i have told you earlier.
1. Introduction to Computer
2. Computer lab rules
3. Basic Operation of computer
4. Computer System
The test will be in 5 sections:
Section A: Multiple Choice Questions (10 marks)
Section B: Short Answer Questions (10 marks)
Section C: Matching Components with its functions (5 marks)
Section D: Diagram Questions (5 marks)
Section E: Labelling and Connection test. (10 marks)
I will be giving you only 1 hour and 15 minutes to complete the test, so please do not waste your time, do attempt all the questions. im sure all of you can answer the test if you try the revision test paper that i have given you on saturday.
Best of Luck!
=)
Saturday, February 7, 2009
Chapter 1 Components Of It & Comp System
some more good slide for your understanding on topic computer system
What is the difference between cookie and cache ?
Cookie means:
A cookie is information that a Web site puts on your hard disk so that it can remember something about you at a later time. (More technically, it is information for future use that is stored by the server on the client side of a client/server communication.) Typically, a cookie records your preferences when using a particular site. Using the Web's Hypertext Transfer Protocol (HTTP), each request for a Web page is independent of all other requests. For this reason, the Web page server has no memory of what pages it has sent to a user previously or anything about your previous visits. A cookie is a mechanism that allows the server to store its own information about a user on the user's own computer. You can view the cookies that have been stored on your hard disk (although the content stored in each cookie may not make much sense to you). The location of the cookies depends on the browser. Internet Explorer stores each cookie as a separate file under a Windows subdirectory. Netscape stores all cookies in a single cookies.txt fle. Opera stores them in a single cookies.dat file.
Cookies are commonly used to rotate the banner ads that a site sends so that it doesn't keep sending the same ad as it sends you a succession of requested pages. They can also be used to customize pages for you based on your browser type or other information you may have provided the Web site. Web users must agree to let cookies be saved for them, but, in general, it helps Web sites to serve users better.
Cache means:
A cache (pronounced CASH) is a place to store something temporarily. The files you automatically request by looking at a Web page are stored on your hard disk in a cache subdirectory under the directory for your browser (for example, Internet Explorer). When you return to a page you've recently looked at, the browser can get it from the cache rather than the original server, saving you time and the network the burden of some additional traffic. You can usually vary the size of your cache, depending on your particular browser.
Computers include caches at several levels of operation, including cache memory and a disk cache. Caching can also be implemented for Internet content by distributing it to multiple servers that are periodically refreshed. (The use of the term in this context is closely related to the general concept of a distributed information base.)
Altogether, we are aware of these types of caches:
International, national, regional, organizational and other "macro" caches to which highly popular information can be distributed and periodically updated and from which most users would obtain information.
Local server caches (for example, corporate LAN servers or access provider servers that cache frequently accessed files). This is similar to the previous idea, except that the decision of what data to cache may be entirely local.
Your Web browser's cache, which contains the most recent Web files that you have downloaded and which is phyically located on your hard disk (and possibly some of the following caches at any moment in time)
A disk cache (either a reserved area of RAM or a special hard disk cache) where a copy of the most recently accessed data and adjacent (most likely to be accessed) data is stored for fast access.
RAM itself, which can be viewed as a cache for data that is initially loaded in from the hard disk (or other I/O storage systems).
L2 cache memory, which is on a separate chip from the microprocessor but faster to access than regular RAM.
L1 cache memory on the same chip as the microprocessor.
A cookie is information that a Web site puts on your hard disk so that it can remember something about you at a later time. (More technically, it is information for future use that is stored by the server on the client side of a client/server communication.) Typically, a cookie records your preferences when using a particular site. Using the Web's Hypertext Transfer Protocol (HTTP), each request for a Web page is independent of all other requests. For this reason, the Web page server has no memory of what pages it has sent to a user previously or anything about your previous visits. A cookie is a mechanism that allows the server to store its own information about a user on the user's own computer. You can view the cookies that have been stored on your hard disk (although the content stored in each cookie may not make much sense to you). The location of the cookies depends on the browser. Internet Explorer stores each cookie as a separate file under a Windows subdirectory. Netscape stores all cookies in a single cookies.txt fle. Opera stores them in a single cookies.dat file.
Cookies are commonly used to rotate the banner ads that a site sends so that it doesn't keep sending the same ad as it sends you a succession of requested pages. They can also be used to customize pages for you based on your browser type or other information you may have provided the Web site. Web users must agree to let cookies be saved for them, but, in general, it helps Web sites to serve users better.
Cache means:
A cache (pronounced CASH) is a place to store something temporarily. The files you automatically request by looking at a Web page are stored on your hard disk in a cache subdirectory under the directory for your browser (for example, Internet Explorer). When you return to a page you've recently looked at, the browser can get it from the cache rather than the original server, saving you time and the network the burden of some additional traffic. You can usually vary the size of your cache, depending on your particular browser.
Computers include caches at several levels of operation, including cache memory and a disk cache. Caching can also be implemented for Internet content by distributing it to multiple servers that are periodically refreshed. (The use of the term in this context is closely related to the general concept of a distributed information base.)
Altogether, we are aware of these types of caches:
International, national, regional, organizational and other "macro" caches to which highly popular information can be distributed and periodically updated and from which most users would obtain information.
Local server caches (for example, corporate LAN servers or access provider servers that cache frequently accessed files). This is similar to the previous idea, except that the decision of what data to cache may be entirely local.
Your Web browser's cache, which contains the most recent Web files that you have downloaded and which is phyically located on your hard disk (and possibly some of the following caches at any moment in time)
A disk cache (either a reserved area of RAM or a special hard disk cache) where a copy of the most recently accessed data and adjacent (most likely to be accessed) data is stored for fast access.
RAM itself, which can be viewed as a cache for data that is initially loaded in from the hard disk (or other I/O storage systems).
L2 cache memory, which is on a separate chip from the microprocessor but faster to access than regular RAM.
L1 cache memory on the same chip as the microprocessor.
Zip Disk Drive
A Zip drive is a small, portable disk drive used primarily for backing up and archiving personal computer files. The trademarked Zip drive was developed and is sold by Iomega Corporation. Zip drives and disks come in two sizes. The 100 megabyte size actually holds 100,431,872 bytes of data or the equivalent of 70 floppy diskettes. There is also a 250 megabyte drive and disk. The Iomega Zip drive comes with a software utility that lets you copy the entire contents of your hard drive to one or more Zip disks.
Thursday, February 5, 2009
ICAS
To my dear Year 7 students:
Anyone interested to participate the ICAS (International Competitions and Assessments for school) please see me or the HOD of computer before the end of February.
Participant have to pay $8 for registration.
Take Note that for those who are interested and have registered you will be sitting for the ICAS on the 21st of April 2009.
Anyone interested to participate the ICAS (International Competitions and Assessments for school) please see me or the HOD of computer before the end of February.
Participant have to pay $8 for registration.
Take Note that for those who are interested and have registered you will be sitting for the ICAS on the 21st of April 2009.
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