Introduction
Generally there are two types of computer case are available in market, for example Tower case and desktop case. The system unit of the desktop personal computer can lie flat on the desk or table and the monitor is usually placed on the system unit. Another model of the computer case is known tower. the system unit of the tower PC is vertically placed on the desk or table. But purchasing a computer case is generally not an important consideration when you are going to buy a computer. However it depends upon the user needs and choice to building a computer case may find it important to consider the following considerations.
CONSIDERATIONS
INTRODUCTION
CD-ROM drive is used with computer to read the information from the CD-R0M. Today CD-ROM drives have transfer rates ranging from 48X to 75X or more. Generally Purchasing a CD-ROM drive relatively easy task however can involve some considerations when purchasing.
Technology of CD-ROM
Before considering purchasing a CD-ROM it is also good consider the other available potions.
CD-R - A CD-writer or recorder (or simply CD-R drive) is used to write data on CD-R disks. Usually, a CD-writer can read information from CD as well as write information on CD, The locally produced CD-R disks are created with CD writer. The speed of these drives is up to 52X or more.
CD-RW - You must have a CD-RW drive to write data on the CD-RW. These drives have read and write speed is up to 52X or more but the re-write speed is 10X or more. the CD-RW drive is advanced and more expensive than CD-R drive. It can write data on both CD-R and CD-RW discs and also read data from them.
DVD - DVD stands for Digital Video Disk Versatile Disc. DVD-ROM is an extremely high capacity optical disk with storage capacity form 4.7 GB to 17 GB.
TRANSFER RATES
Today CD-ROM drives have transfer rates or speeds ranging from 52X to 72X or more For example, a 52X CD-ROM drive has a data transfer rate of 7,200 KBps (i.e. 48 X 150 = 7200) or 7.2 MBps. It means that the higher the number, the faster the CD-ROM drives. This speed is generally only going to be noticeable when installing a program or copying large amount of data from a CD.
PRICE RANGE
For a CD-ROM drive, not to be confused with a CD-R, CD-RW or DVD drive can vary depending upon the speed and the interface the CD-ROM drive uses.
Tips On Buying A CPU/Processor.
INTRODUCTION
Processor is considered the brain of the computer. The CPU fetches instructions of program from main memory and executes them one by one. The speed of the CPU is measured in Mega Hertz or Giga Hertz and speed from 500 MHZ to 3.4 GHz, it depends upon a user needs, that is why purchasing a processor is an important consideration when building or buying a computer. There are several considerations and additional information about what to ask and look for when purchasing a processor directly or already installed into a computer.
TYPE
The type of the processor can be very important consideration for users who are building a computer. The main thing in processor is the compatibility with the motherboard, Because the processor chip is plugged into the motherboard. Today there are many processor manufacturers AMD, Motorola and Intel. Final decision to buy a processor depends upon user need or example a home or basic user can buy Intel Celeron or AMD processor. If you can afford then must go for latest processor it you want your computer to retain functionality for four to six years. When considering any of the above companies product ensure that a motherboard that is compatible with that product is also purchased. For example if an Intel motherboard is purchased or currently installed into the computer you will want to consider an Intel Processor.
Tips On Buying A DVD Drives.
INTRODUCTION
DVD drives is used with computer to read the information from the DVD-ROM. Today DVD drives have transfer rates ranging of different capacity. Buying a DVD drive is confusing task, because there are many option for this purpose are available in market. Below we have listed important considerations to look at when considering purchasing a DVD drive.
Technology of DVD Drives
Befor considering purchasing a DVD drives, it is also good consider the other available options.
CD-R - A CD-writer or recorder (or simply CD-R drive) is used to write data on CD-R disks. Usually, a CD-writer can read information from CD as well as write information on Cd, The locally produced Cd-R disks are created with Cd writer. The speed of therse drives is up to 52X or more.
CD-RW - You must have a CD-RW drive to write datae on the CD-RW. These drives have read any write speed is up to 52X or more but the re-write speed is 10X or more. The CD-RW drive is advanced and more expensive than CD-R drive. It can write data on both CD-R and CD-RW discs and also read data from them.
DVD - DVD stands for Digital Video Disk Versatile Disc. DVD-ROM is an extremely high capacity optical dis with storage capacity from 4.7 GB to 17 GB.
TRANSFER RATES
DVD-ROM is an extremely high capacity optical disc with storage capacity from 4.7 GB to 17 GB. DVD disc is specially use to store movie films. It is also used to store huge database, music, complex software etc.
OTHER CONSIDERATIONS
There are some other important considerations to look at when purchasing a computer DVD drives include:
DVD option: DVD-R, DVD-R DL, DVD+R, DVD-RW, DVD+RW DVD+RW DL, DVD-RAM.
Warranty: How long is the warranty and what does it cover.
Tips For Buying Flat Panels
Introduction of Flat Panel Monitors
These are two basic type of monitor that are used with personal computer, CRT Monitor are Flat-Panel Monitor. Flat Panel is relatively new technology when compared to the CRT or standard monitor technology. Due to new technology some important considerations to look at when purchasing a flat panel Monitor.
Technology of LCD
There are two categories of LCD's then Before looking at what type of configurations you need to look for when purchasing a computer Flat Panel it is important to know if you want Active matrix LCD or Passive Matrix LCD.
Active Matrix LCD : Active matrix LCD uses a transistor for each liquid crystal cell or pixel and thus display high quality images. Active Matrix LCD is also known Thin Film Transistor (TFT) display. Today, new generation of TFT is called organic LED that displays brighter images than standard TFT display. The organic LED uses organic molecules to generate output on the screen.
Passive Matrix LCD : Passive Matrix LCD uses fewer transistors and requires less power than active matrix LCD. The colors on Passive Matrix LCD are not bright as compared to active matrix LCD.
Resolution
quality of LCD screen depends on its resolution, which is generally proportional to the size of screen.
1.5" flat panel monitor typically has a resolution of 800 x 600/1,024 x 768
1.7" flat panel monitor typically has a resolution of 1,280 x 1,024
19" flat panel monitor typically has a resolution of 1,280 x 1024
21" flat panel monitor typically has a resolution of 1,600 x 1,200
Tips For Buying A Hard Drive
Introduction of Hard Disk
Today Hard dis is most commonly used storage device in personal computers and laptop computer. Mostly application program and operation systems require hard disk for installation and operation. That is way it is very important to verity when purchasing a hard disk drive, this hard disk drive is suitable for your uses and has or does not have the options you may or may not need.
Interface of the hard disk
There are many types of hard disks available in the market for example IDE/ATA, SCSI, External hard drive. That is why first decide your need is internal or external hard drives. When looking to purchase a hard disk drive the first it is important consideration is the interface the hard disk drive uses to communicate with the computer.
Tips On Buying A Computer Motherboard
Introduction of Motherboard
The motherboard is the main circuit board of the system unit. You can say that motherboard is the master circuit board in the computer. Many new user of computer are not well aware about motherboard that is why for users planning on building a computer a motherboard can be a confusing decision . Below we have listed some considerations and tips when looking at purchasing a computer motherboard.
There are many factor of the motherboard is a crucial consideration when looking at a motherboard.
PC motherboard has two or more expansion sloths used to add new components to the computer. The memory chips are also inserted into the expansion slot to expand the size of memory. Given option are very important in any motherboard for example:
Accelerator: It is used to increase the speed of processor.
I/O:It is used to connect input/output devices such as printer, mouse and keyboard.
Game:It is use to connect joystick.
Disk Controller: It is used to connect disk and CD drives.
Modem: It is used to connect other computers through telephone line or cable telephone line.
TV Tuner: It is used for viewing television channels on the computer monitor
How To Buying a Printer?
Introduction
These are most commonly used output devices used to get prints of documents on the pager. Different printers have different mechanisms. Therefore purchasing a printer can be a sometimes confusing task. The following is additional information that will help in your purchasing decisions.
Technology of printers
There are many types and technology of printer are available in market bu the most popular and commonly used are inkjet and laser printer.
Ink Jet Printer. The inkjet printer is not-impact character printer and prints one character at a time. The printing quality of inkjet printer is measured by the number of tiny ink of drops per inch (dpi). Most inkjet printers range form 300 to 2400 dpi. Printers with high dpi usually are more expensive but having high printing quality. The speed of an inkjet printer is measured by the number of pages per minute it can print. Its printing speed is up to 15 ppm. Therefore purchasing a printer can be depends upon printers dpi and ppm but it depends upon user need.
Laser Printer. A laser printer is the fastest and high quality printer, but a laser prints are more expensive than inkjet printer and their print quality is also higher.
Speed and price range
The price of laser printers depend on the quality and printing speed. The color printers are more costly than black-and-white laser printers. The higher the resolution and speed, the more expensive the printer. The price range can vary depending upon the quality of the printer and the type of printer for example inkjet, laser printers.
Read To Buy
Once you have reviewed the appropriate information and believe that you are ready to make a purchase of a printer ensure that the source which you plan on purchasing the printer form is a reputable source and you have reviewed our section on what to look out for when purchasing over the Internet.
Generally there are two types of computer case are available in market, for example Tower case and desktop case. The system unit of the desktop personal computer can lie flat on the desk or table and the monitor is usually placed on the system unit. Another model of the computer case is known tower. the system unit of the tower PC is vertically placed on the desk or table. But purchasing a computer case is generally not an important consideration when you are going to buy a computer. However it depends upon the user needs and choice to building a computer case may find it important to consider the following considerations.
CONSIDERATIONS
- Color of case
- Type of case (Tower case and Desktop case)
- Size of Case
- Please must consider that case have enough slots which will allow you to add additional hard dis CD-ROM, floppy drives or other drives.
- Other main consideration is that cases have the availability for slots for additional cards to be placed in. For example VGA Card, LAN card and internal Modem.
 |
| CD-ROM |
INTRODUCTION
CD-ROM drive is used with computer to read the information from the CD-R0M. Today CD-ROM drives have transfer rates ranging from 48X to 75X or more. Generally Purchasing a CD-ROM drive relatively easy task however can involve some considerations when purchasing.
Technology of CD-ROM
Before considering purchasing a CD-ROM it is also good consider the other available potions.
CD-R - A CD-writer or recorder (or simply CD-R drive) is used to write data on CD-R disks. Usually, a CD-writer can read information from CD as well as write information on CD, The locally produced CD-R disks are created with CD writer. The speed of these drives is up to 52X or more.
CD-RW - You must have a CD-RW drive to write data on the CD-RW. These drives have read and write speed is up to 52X or more but the re-write speed is 10X or more. the CD-RW drive is advanced and more expensive than CD-R drive. It can write data on both CD-R and CD-RW discs and also read data from them.
DVD - DVD stands for Digital Video Disk Versatile Disc. DVD-ROM is an extremely high capacity optical disk with storage capacity form 4.7 GB to 17 GB.
TRANSFER RATES
Today CD-ROM drives have transfer rates or speeds ranging from 52X to 72X or more For example, a 52X CD-ROM drive has a data transfer rate of 7,200 KBps (i.e. 48 X 150 = 7200) or 7.2 MBps. It means that the higher the number, the faster the CD-ROM drives. This speed is generally only going to be noticeable when installing a program or copying large amount of data from a CD.
PRICE RANGE
For a CD-ROM drive, not to be confused with a CD-R, CD-RW or DVD drive can vary depending upon the speed and the interface the CD-ROM drive uses.
Tips On Buying A CPU/Processor.
 |
| Processor |
INTRODUCTION
Processor is considered the brain of the computer. The CPU fetches instructions of program from main memory and executes them one by one. The speed of the CPU is measured in Mega Hertz or Giga Hertz and speed from 500 MHZ to 3.4 GHz, it depends upon a user needs, that is why purchasing a processor is an important consideration when building or buying a computer. There are several considerations and additional information about what to ask and look for when purchasing a processor directly or already installed into a computer.
TYPE
The type of the processor can be very important consideration for users who are building a computer. The main thing in processor is the compatibility with the motherboard, Because the processor chip is plugged into the motherboard. Today there are many processor manufacturers AMD, Motorola and Intel. Final decision to buy a processor depends upon user need or example a home or basic user can buy Intel Celeron or AMD processor. If you can afford then must go for latest processor it you want your computer to retain functionality for four to six years. When considering any of the above companies product ensure that a motherboard that is compatible with that product is also purchased. For example if an Intel motherboard is purchased or currently installed into the computer you will want to consider an Intel Processor.
Tips On Buying A DVD Drives.
 |
| DVD Drives |
INTRODUCTION
DVD drives is used with computer to read the information from the DVD-ROM. Today DVD drives have transfer rates ranging of different capacity. Buying a DVD drive is confusing task, because there are many option for this purpose are available in market. Below we have listed important considerations to look at when considering purchasing a DVD drive.
Technology of DVD Drives
Befor considering purchasing a DVD drives, it is also good consider the other available options.
CD-R - A CD-writer or recorder (or simply CD-R drive) is used to write data on CD-R disks. Usually, a CD-writer can read information from CD as well as write information on Cd, The locally produced Cd-R disks are created with Cd writer. The speed of therse drives is up to 52X or more.
CD-RW - You must have a CD-RW drive to write datae on the CD-RW. These drives have read any write speed is up to 52X or more but the re-write speed is 10X or more. The CD-RW drive is advanced and more expensive than CD-R drive. It can write data on both CD-R and CD-RW discs and also read data from them.
DVD - DVD stands for Digital Video Disk Versatile Disc. DVD-ROM is an extremely high capacity optical dis with storage capacity from 4.7 GB to 17 GB.
TRANSFER RATES
DVD-ROM is an extremely high capacity optical disc with storage capacity from 4.7 GB to 17 GB. DVD disc is specially use to store movie films. It is also used to store huge database, music, complex software etc.
OTHER CONSIDERATIONS
There are some other important considerations to look at when purchasing a computer DVD drives include:
DVD option: DVD-R, DVD-R DL, DVD+R, DVD-RW, DVD+RW DVD+RW DL, DVD-RAM.
Warranty: How long is the warranty and what does it cover.
Tips For Buying Flat Panels
Introduction of Flat Panel Monitors
These are two basic type of monitor that are used with personal computer, CRT Monitor are Flat-Panel Monitor. Flat Panel is relatively new technology when compared to the CRT or standard monitor technology. Due to new technology some important considerations to look at when purchasing a flat panel Monitor.
Technology of LCD
There are two categories of LCD's then Before looking at what type of configurations you need to look for when purchasing a computer Flat Panel it is important to know if you want Active matrix LCD or Passive Matrix LCD.
Active Matrix LCD : Active matrix LCD uses a transistor for each liquid crystal cell or pixel and thus display high quality images. Active Matrix LCD is also known Thin Film Transistor (TFT) display. Today, new generation of TFT is called organic LED that displays brighter images than standard TFT display. The organic LED uses organic molecules to generate output on the screen.
Passive Matrix LCD : Passive Matrix LCD uses fewer transistors and requires less power than active matrix LCD. The colors on Passive Matrix LCD are not bright as compared to active matrix LCD.
Resolution
quality of LCD screen depends on its resolution, which is generally proportional to the size of screen.
1.5" flat panel monitor typically has a resolution of 800 x 600/1,024 x 768
1.7" flat panel monitor typically has a resolution of 1,280 x 1,024
19" flat panel monitor typically has a resolution of 1,280 x 1024
21" flat panel monitor typically has a resolution of 1,600 x 1,200
Tips For Buying A Hard Drive
 |
| Hard Drive |
Introduction of Hard Disk
Today Hard dis is most commonly used storage device in personal computers and laptop computer. Mostly application program and operation systems require hard disk for installation and operation. That is way it is very important to verity when purchasing a hard disk drive, this hard disk drive is suitable for your uses and has or does not have the options you may or may not need.
Interface of the hard disk
There are many types of hard disks available in the market for example IDE/ATA, SCSI, External hard drive. That is why first decide your need is internal or external hard drives. When looking to purchase a hard disk drive the first it is important consideration is the interface the hard disk drive uses to communicate with the computer.
- IDE/ATA This type of hard disk is used with IBM compatible computers, and very easy to install in a computer. Each IBM computer has the availability for a maximum of four IDE devices, for example IDE hard disk, CD drive and DVD drive.
- SCSI The SCSI interface is generally a better and faster solution when compared to IDE/ATA but this solution is not best for common user only best for server level machine. however in some cases can be more difficult to install. To install a SCSI hard disk drive you must have a SCSI card and an available connection on the SCSI cable connection to the SCSI card.
- External Hard Disk There are many solution are also available; these include, USB Hard Disk drive, Fire wire Hard disk drive and Parallel Hard disk dive. The main benefit with external hard disk, you can move it where you want very easily. Mostly external hard disk is used to data backup and change the physical location of data.
Other considerations.
Here are some important consideration s to look at when purchasing a computer new hard disk drive:
Speed:
Hard disk speed is playing an important role when your consider a
computer speed. The accessing speed of hard disk is also very high as
compare to other storage devices. It is form 5 to 15 MBps. The platters
of hard disk rotate from 3000 to 10,000 revolution per min.
Warranty: How long is the warranty and what does it cover.
Tips On Buying A Computer Memory
 |
| Computer Memory |
Introduction of Computer memory.
The computer memory plays very important role in data processing.
computer memory means the computer can use powerful program with large
size. It also improves the data procession speed of compter, tat is way
it is very important to verify when purchasing a computer memory, this
memory is suitable for your computer and needs. Below is a listing of
different considerations and tips to look for when purchasing computer
memory.
Type of Memory
There are mny types of memory ailable in mrket, Before puchasing any memory or considerig purchasing memory it is important that you distinguish the type of memory that is requireed. Below is a listing of some of the configuratin s of computer memory.
Memory type: SIMM, DIMM, RIMM
Amount of Pins: 72-Pin, 30-Pin, etc..
Speed of memory: 10ns, 60ns, 70ns, etc..Below is listing of additional considerations to look out when purchasing computer memory.
Tips On Buying Computer Monitors.
Introduction of Monitor
The monitor is popular and most commonly used output deice. Most monitors used in personal computer s display text, graphics, and video information. Due to different and futures of monitor purchasing can be one of the most important pieces of the computer as it is what will display everything coming form your computer.
Technology of monitor
These are tow basic types of monitors that are used with personal computer
Type of Memory
There are mny types of memory ailable in mrket, Before puchasing any memory or considerig purchasing memory it is important that you distinguish the type of memory that is requireed. Below is a listing of some of the configuratin s of computer memory.
Memory type: SIMM, DIMM, RIMM
Amount of Pins: 72-Pin, 30-Pin, etc..
Speed of memory: 10ns, 60ns, 70ns, etc..Below is listing of additional considerations to look out when purchasing computer memory.
Tips On Buying Computer Monitors.
 |
| Monitor |
The monitor is popular and most commonly used output deice. Most monitors used in personal computer s display text, graphics, and video information. Due to different and futures of monitor purchasing can be one of the most important pieces of the computer as it is what will display everything coming form your computer.
Technology of monitor
These are tow basic types of monitors that are used with personal computer
- CRT monitors
- Flat-Panel Monitors
When purchasing computer monitor it is important to know if you want a CRT monitor or a Flat Panel monitor.
CRT Monitors.
A CRT monitor is similar to standard television. Like televisions, CRT
monitor size is measured diagonally in inches, across the front of the
screen. Today, CRT monitors r available in various sizes, i.e., 15, 17,
19, 21 and 22 inches. the large size monitors are more expensive
and allow you to view ore information on the screen at once.
Flat Panel/LCD. A
flat panel monitor is also called LCD monitor. A flat panel monitor
takes up less desk space and also consumes less power. Flat panel
monitors are available with different sizes such as 15, 17, 18, 20, 21
and 23 inches. Flat panel monitors are commonly used in mobile devices
such as laptop and table PCs. Similarly, smart phones PDAS calculators
have LCD screens.
There are tow main categories of LCDs. These are
- Active Matrix LCD
- Passive Matrix LCD
Resolution
The quality of monitor screen depends on its resolution, which is generally proportional to the size of screen.
1.5" flat panel monitor typically has a resolution of 800 x 600/1,024 x 768
1.7" flat panel monitor typically has a resolution of 1,280 x 1,024
19" flat panel monitor typically has a resolution of 1,280 x 1024
21" flat panel monitor typically has a resolution of 1,600 x 1,200
Once you have reviewed the appropriate information and believe that you are ready to make a purchase of a new monitor ensure that the source which you plan on purchasing the monitor from is a reputable source and you have reviewed our section on what to look out for when purchasing over the Internet.
1.5" flat panel monitor typically has a resolution of 800 x 600/1,024 x 768
1.7" flat panel monitor typically has a resolution of 1,280 x 1,024
19" flat panel monitor typically has a resolution of 1,280 x 1024
21" flat panel monitor typically has a resolution of 1,600 x 1,200
Once you have reviewed the appropriate information and believe that you are ready to make a purchase of a new monitor ensure that the source which you plan on purchasing the monitor from is a reputable source and you have reviewed our section on what to look out for when purchasing over the Internet.
Tips On Buying A Computer Motherboard
 |
| Motherboard |
Introduction of Motherboard
The motherboard is the main circuit board of the system unit. You can say that motherboard is the master circuit board in the computer. Many new user of computer are not well aware about motherboard that is why for users planning on building a computer a motherboard can be a confusing decision . Below we have listed some considerations and tips when looking at purchasing a computer motherboard.
There are many factor of the motherboard is a crucial consideration when looking at a motherboard.
PC motherboard has two or more expansion sloths used to add new components to the computer. The memory chips are also inserted into the expansion slot to expand the size of memory. Given option are very important in any motherboard for example:
Accelerator: It is used to increase the speed of processor.
I/O:It is used to connect input/output devices such as printer, mouse and keyboard.
Game:It is use to connect joystick.
Disk Controller: It is used to connect disk and CD drives.
Modem: It is used to connect other computers through telephone line or cable telephone line.
TV Tuner: It is used for viewing television channels on the computer monitor
How To Buying a Printer?
 |
| Printer |
Introduction
These are most commonly used output devices used to get prints of documents on the pager. Different printers have different mechanisms. Therefore purchasing a printer can be a sometimes confusing task. The following is additional information that will help in your purchasing decisions.
Technology of printers
There are many types and technology of printer are available in market bu the most popular and commonly used are inkjet and laser printer.
Ink Jet Printer. The inkjet printer is not-impact character printer and prints one character at a time. The printing quality of inkjet printer is measured by the number of tiny ink of drops per inch (dpi). Most inkjet printers range form 300 to 2400 dpi. Printers with high dpi usually are more expensive but having high printing quality. The speed of an inkjet printer is measured by the number of pages per minute it can print. Its printing speed is up to 15 ppm. Therefore purchasing a printer can be depends upon printers dpi and ppm but it depends upon user need.
Laser Printer. A laser printer is the fastest and high quality printer, but a laser prints are more expensive than inkjet printer and their print quality is also higher.
Speed and price range
The price of laser printers depend on the quality and printing speed. The color printers are more costly than black-and-white laser printers. The higher the resolution and speed, the more expensive the printer. The price range can vary depending upon the quality of the printer and the type of printer for example inkjet, laser printers.
Read To Buy
Once you have reviewed the appropriate information and believe that you are ready to make a purchase of a printer ensure that the source which you plan on purchasing the printer form is a reputable source and you have reviewed our section on what to look out for when purchasing over the Internet.
