MICROSOFT OPEN OFFICE
MS Word- Writer (.odt)
MS Excel- Calc (.ods)
MS Paint- Draw (.odg)
MS Powerpoint- Impress (.odp)
MS Publisher- Base (.odb)
Martes, Agosto 23, 2011
Martes, Agosto 9, 2011
VIRUS
VIRUS, simply known as the common computer virus, actually stands for Very Important Resource
Under Siege. Not be confused with Malware, VIRUS is actually easy to detect and easy to treat. VIRUS is actually for business purposes. Anti-virus companies are the one sresponsible for computer viruses attacking other computers.
Under Siege. Not be confused with Malware, VIRUS is actually easy to detect and easy to treat. VIRUS is actually for business purposes. Anti-virus companies are the one sresponsible for computer viruses attacking other computers.
Lesson Three Summary
Lesson 3: PC Care and Safety Procedures for Users
Introduction
How to Take Care of Your PC
1.Computers need a good working temperature to work properly.
2.All the cables and connectors must be tied together to keep them away from walkways to avoid accidents.
3.Refrain from eating in front of a computer.
4.Always use an AVR.Also turn off computers during lightning as this can cause electrical surges to the computer.
5.Do not bump or drop the computer peripherals or components as any damage may cause them to malfunction.
6.Avoid clutter around your computer.
7.Always scan for computer viruses.
GOOD WORKING HABITS
1.Tap on the keys and mouse buttons gently.
2.Avoid long, uninterrupted periods of typing.
3.Avoid staring at the monitor for long periods.
PROPER WORKSTATION DESIGN
1.Position in a well-ventilated, comfortable room.
2.Use an adjustable workstation and an ergonomic computer chair.
3.Place the monitor 16 to 24 inches away, at eye level or slightly at a lower angle.
4.Use extendable/retractable legs of the keyboard.
5.Place mouse where it is easily accessible by your dominant hand,
6.Use a document holder to minimize vertical head movements.
PROPER POSTURE
1.Sit up straight and put feet flat on the floor.
2.Position your lower arms parallel with he floor and level to your keyboard, with elbows at your side
3.Keep wrists straight.
4.Do not lean into he monitor, but sit close enough to the keyboard and the mouse to stay relaxed.
Introduction
How to Take Care of Your PC
1.Computers need a good working temperature to work properly.
2.All the cables and connectors must be tied together to keep them away from walkways to avoid accidents.
3.Refrain from eating in front of a computer.
4.Always use an AVR.Also turn off computers during lightning as this can cause electrical surges to the computer.
5.Do not bump or drop the computer peripherals or components as any damage may cause them to malfunction.
6.Avoid clutter around your computer.
7.Always scan for computer viruses.
GOOD WORKING HABITS
1.Tap on the keys and mouse buttons gently.
2.Avoid long, uninterrupted periods of typing.
3.Avoid staring at the monitor for long periods.
PROPER WORKSTATION DESIGN
1.Position in a well-ventilated, comfortable room.
2.Use an adjustable workstation and an ergonomic computer chair.
3.Place the monitor 16 to 24 inches away, at eye level or slightly at a lower angle.
4.Use extendable/retractable legs of the keyboard.
5.Place mouse where it is easily accessible by your dominant hand,
6.Use a document holder to minimize vertical head movements.
PROPER POSTURE
1.Sit up straight and put feet flat on the floor.
2.Position your lower arms parallel with he floor and level to your keyboard, with elbows at your side
3.Keep wrists straight.
4.Do not lean into he monitor, but sit close enough to the keyboard and the mouse to stay relaxed.
Biyernes, Hulyo 29, 2011
Different Types of Computers
Tuesday, July 26, 2011
Different Types of Computers
Computers may be classified according to their features and uses.Many people chose computers depending on their needs. Given below are the different types of computers:
TYPES OF COMPUTERS
Supercomputers- the fastest computer and is used in science-related areas because of its unique appplications
Mainframe Computers- this very expensive and large computer can support up to thousands of users at th esame time.
Minicomputer- this is a medium-power computer that stands between a standard personal computer and a mainframe.
Workstation-this type is commonly used for desktop publication, engineering applications and other areas that need a moderate amount of computing power and high graphics quality.
Personal computer- as the name suggests, a personal computer is designed for personal use.
TYPES OF PERSONAL COMPUTERS
Tower model- this model refers to a computer whose power supply, motherboard and mass storage devices are stacked on top of each other
Desktop model- a computer which is designed to fit comfortably on the top of a desk.
Portable computer-computers small enough to be carried
TYPES OF PORTABLE COMPUTERS
Notebook Computer- lightweight personal computer that is small enough to fit in a briefcase
Subnotebook Computer-compared to the notebook computer, it is has smaller keyboard and screen and lighter and smaller.
Laptop computer- one of the most popular types of portable computers due to its features that are equal or close to those of desktop computers
HAND-HELD COMPUTERS
Palmtop- it can literally fit into your palm
Personal Digital Assistant(PDA)- a handheld device that combines computing, telephone/fax and networking features.This also function as a cellular phone, fax sender and personal organizer.
TYPES OF COMPUTERS
Supercomputers- the fastest computer and is used in science-related areas because of its unique appplications
Mainframe Computers- this very expensive and large computer can support up to thousands of users at th esame time.
Minicomputer- this is a medium-power computer that stands between a standard personal computer and a mainframe.
Workstation-this type is commonly used for desktop publication, engineering applications and other areas that need a moderate amount of computing power and high graphics quality.
Personal computer- as the name suggests, a personal computer is designed for personal use.
TYPES OF PERSONAL COMPUTERS
Tower model- this model refers to a computer whose power supply, motherboard and mass storage devices are stacked on top of each other
Desktop model- a computer which is designed to fit comfortably on the top of a desk.
Portable computer-computers small enough to be carried
TYPES OF PORTABLE COMPUTERS
Notebook Computer- lightweight personal computer that is small enough to fit in a briefcase
Subnotebook Computer-compared to the notebook computer, it is has smaller keyboard and screen and lighter and smaller.
Laptop computer- one of the most popular types of portable computers due to its features that are equal or close to those of desktop computers
HAND-HELD COMPUTERS
Palmtop- it can literally fit into your palm
Personal Digital Assistant(PDA)- a handheld device that combines computing, telephone/fax and networking features.This also function as a cellular phone, fax sender and personal organizer.
History of Computers
Tuesday, July 26, 2011
History of Computers
HISTORY OF COMPUTERS
Computers help us a lot in many ways. We make use of them especially when we need something to be done efficiently, like our homeworks and projects. We also learn how to mingle and make friends through social networking sites like Facebook and Twitter. How wonderful is the world of technology....
Who invented the computer? Actually, there is no particular inventor who made this masterpiece, since a lot of inventors contributed their own inventions of computers through the ages. Here are a few of the early computers:
ABACUS- the first computers; used for simple operations
NAPIER'S BONE- this tool is made up of multiplication tables inscribed in a wood or bone.
SLIDE RULE- a single straight two-foot long ruler plotted with a logarmithic scale.
Manual Mechanical Computers
PASCALINE- first operational calculating machine that could add large numbers
STEP RECKONER-a device that could add, subtract, multiply, divde and get square roots.
DIFFERENCE ENGINE-automatically calculated mathematical tables, such as logarithmic and trigonometric tables. Charles Babbage called this machine a "computer"
ANALYTICAL ENGINE- not only able to perform calculations but also to store data in the memory and perform logical comparison.
Electromechanical Computer
HOLLERITH'S TABULATING MACHINE- this machine was able to represent, read and assemble data
Electronic Computers
MARK 1- could execute operations in a short period of time
ENIAC or Electronic Numerical Integrator and Computer- made up of vacuum tubes; used to process one problem at a time
UNIVAC or Universal Automatic Computer-it is the first commercially available computer that could perform about 1,905 operations per second running on a 2.25 Megahertz clock
Computers help us a lot in many ways. We make use of them especially when we need something to be done efficiently, like our homeworks and projects. We also learn how to mingle and make friends through social networking sites like Facebook and Twitter. How wonderful is the world of technology....
Who invented the computer? Actually, there is no particular inventor who made this masterpiece, since a lot of inventors contributed their own inventions of computers through the ages. Here are a few of the early computers:
ABACUS- the first computers; used for simple operations
NAPIER'S BONE- this tool is made up of multiplication tables inscribed in a wood or bone.
SLIDE RULE- a single straight two-foot long ruler plotted with a logarmithic scale.
Manual Mechanical Computers
PASCALINE- first operational calculating machine that could add large numbers
STEP RECKONER-a device that could add, subtract, multiply, divde and get square roots.
DIFFERENCE ENGINE-automatically calculated mathematical tables, such as logarithmic and trigonometric tables. Charles Babbage called this machine a "computer"
ANALYTICAL ENGINE- not only able to perform calculations but also to store data in the memory and perform logical comparison.
Electromechanical Computer
HOLLERITH'S TABULATING MACHINE- this machine was able to represent, read and assemble data
Electronic Computers
MARK 1- could execute operations in a short period of time
ENIAC or Electronic Numerical Integrator and Computer- made up of vacuum tubes; used to process one problem at a time
UNIVAC or Universal Automatic Computer-it is the first commercially available computer that could perform about 1,905 operations per second running on a 2.25 Megahertz clock
Environmental Scanning Powerpoint Presentation
Environmental Scanning Power Point Presentation
Common part of strategic analysis; There are internal elements and external elements ... SWOT Strategic Matrix. S-O strategies are strategies that build on ...
www.slideworld.com/slideshows.../Strategic-Planning-Environmental-Scanning-ppt-666228 - Naka-cache - Katulad
Binisita mo ang pahinang ito noong 7/21/11.
www.slideworld.com/slideshows.../Strategic-Planning-Environmental-
Binisita mo ang pahinang ito noong 7/21/11.
Wednesday, June 15, 2011
HISTORY OF AIR CONDITIONER
The development of refrigeration started in the early days with the need to preserve foods. Foods that are kept at room temperature spoil easily due to the growth of bacteria. At temperature below 4'C, the growth of bacteria is reduced rapidly. As a result of the development in food refrigeration, other applications follow which include air conditioning. The commercially available of air conditioning applications started based on the need to cool air for industrial processes than for personal comfort.
The first electrical air conditioning was invented by Willis Haviland Carrier in the year 1902. He was also known as the Father of Modern Air Conditioning. His invention was designed to improve the manufacturing process of a printing plant, the process were made more efficient as the paper size and the ink allignment were consistently maintained.
The Carrier Air Conditioning company of America was established by him to meet the demand to better productivity in the workplace. Today, Carrier Corporation is the biggest air conditioner manufacturer and marketing corporation in the world in central air conditioning.
The discovery of freon in 1928 by Thomas Midgley, Jr., a safer refrigerant to humans compared to the toxic and flammable gases such as ammonia, propane and methyl chloride sparks the invention of air conditioning systems for residential, industrial and commercial applications.
Unfortunately, the use of CFC and HCFC refrigerants are causing the depletion of ozone layer in our atmosphere that is causing harmful rays to penetrate our earth. Newer ozone friendly refrigerants have been developed to replace refrigerants such as R-11, R-12 and R-22 to name a few. Non-ozone depletion refrigerant such as R-410a has been used in newer air conditioning systems.
The first electrical air conditioning was invented by Willis Haviland Carrier in the year 1902. He was also known as the Father of Modern Air Conditioning. His invention was designed to improve the manufacturing process of a printing plant, the process were made more efficient as the paper size and the ink allignment were consistently maintained.
The Carrier Air Conditioning company of America was established by him to meet the demand to better productivity in the workplace. Today, Carrier Corporation is the biggest air conditioner manufacturer and marketing corporation in the world in central air conditioning.
The discovery of freon in 1928 by Thomas Midgley, Jr., a safer refrigerant to humans compared to the toxic and flammable gases such as ammonia, propane and methyl chloride sparks the invention of air conditioning systems for residential, industrial and commercial applications.
Unfortunately, the use of CFC and HCFC refrigerants are causing the depletion of ozone layer in our atmosphere that is causing harmful rays to penetrate our earth. Newer ozone friendly refrigerants have been developed to replace refrigerants such as R-11, R-12 and R-22 to name a few. Non-ozone depletion refrigerant such as R-410a has been used in newer air conditioning systems.
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