Sabtu, 13 Agustus 2016

Importance of Computer Accessories

Computers have become really advanced with wide varieties of accessories attached to it. We can define an accessory as a device which is attached to a computer but is not a part of it. The functionality of an accessory depends on the computer it is attached to. A computer has to be equipped with all the necessary accessories in order to carry out all the tasks in more efficient way. There are two formats of accessories one is basic accessories and other is an advanced accessories.Basic accessories available are speakers, printers, scanners, UPS, surge protector, headsets, cases and covers, cleaning and repair kits etc. Advance computer accessories include webcam, microphones, gaming equipments, portable storage devices, CD and DVD recordable drives, network accessories, modem.
These computer accessories make each task very fast and easy for example if you have a personal printer connected to your PC then there is no need to go to any office to get the document printed. The most important computer device is the UPS (Uninterrupted Power Supply), it provides a continuous power supply to a computer so that no data should be lost. A Headset comes with a built-in microphone so you can not only listen to music but also make a call from your computer to other computer or phone. Webcam allows taking pictures or recording your video or can be used to have a live chat with anyone through internet.
Portable storage devices like USB flash drives can be used to transfer data. The capacity of these devices varies from 8 to 12 Gigabytes. Rewritable CDs and DVDs are also other source of transfering and storing data. If above devices are not enough for transferring data then we can also go for networking accessories such as LAN cables or modem. These networking devices can be used to transfer data within a Local Area Network or over internet.
Most of the laptops have built-in wireless internet which enables the traveler to access the internet while traveling. Important features of the mini laptops are the external monitor support and S video used to connect it to TV. A wireless laptop mouse is a great accessory. A desktop computer also comes in amazing all-in-one features which includes touch screen, Wi-Fi, color choices, built-in webcams, and TV tuners.
In order to buy a new desktop computer one needs to know that there are standard accessories which comes with the computer like speaker, keyboard, mouse, monitor. But there are some which has to be purchased separately like webcams, UPS, modem, external hard disk etc. But in case of a laptop, webcam, speakers etc comes as built-in devices. Other devices to be purchased are portable laptop desks to prevent laptop burn and provide comfortable working position. Universal Laptop power adapters, portable projector, mobile printers, wireless laptop mice, laptop speakers are some of the other computer accessories to be purchased while buying a laptop.

The Top 5 Most Common Computer Problems

If you have a PC, then you have most likely suffered from computer problems. Most people have accepted that there PC will ever crash due to a virus or some massive error. However this is a myth. Your PC is built to last more than a decade. However you must keep well tuned for it to make its third birthday. Neverheless, most people would rather buy a shiny new PC rather than spend an hour trying to fix computer problems on there 2 year lap top or desktop. After another two year after their purchase lack of maintenance will cause their new PC to lose its performance speed. Whats next you guess, $ 3000 Windows Vista Ready PC. This is known as the consumer vicious cycle.
Why do your computer have problems?
Well, the biggest problem that your computer has is its owner. More than 80% of computer problems stem from neglecting to perform simple maintenance task such as cleaning your registry, emptying your cache files and updating software regularly. If these task a perform diligently. You would be reading this article from a five year old machine running on Windows 98 operating system. So, lets take a look at the top five computer problems and how to avoid them.
1. Computer has performance has slowed.
This is the number one complaint from most users. There are several reasons why this has occurred. However, most can attributed to lack of maintenance. Fragmented data, corrupted registry, spyware, and load of unnecessary programs and services running can all eat away at your PC speed and performance. Managing your programs and cleaning your registry would easily award you a 30% gain in performance speed. Check out The 4 ways to speed up my computer
2. Lockup, freezes, and blue screens of death.
This is a another common computer problem. However, this particular issue is a bit more serious; Therefore, it needs a few diagnostic steps. In most cases these problems are caused by spyware. To avoid this problem update your anti-spyware program daily. Having the most up to date signatures will help you avoid having a serious spyware problem. However, if you have concluded that your PC is spyware free. You should update your hardware drivers. The computer can not communicate with various hardware components without an up to date driver. When it can not find a driver, the CPU locks up. Also, increasing your virtual memory can also help to avoid freezes. Virtual Memory will allow you to get more use out your computer's RAM. Check the resource box for more info on the subject.
3. The computer spontaneously reboots or turn itself off.
This computer problem can be usually attributed to a hardware issue. Usually its the power supply is dying or in most cases a dirty or defective cooling fan. The computer trying to cool itself by automatically switching off. So, if you feel a bit of extra heat coming out the computer. Clean the fan and make sure it running properly. If your fan is functional, check your power supply. Also, you will be surprised how many people fail to make sure the cables are attached tightly. This will be the cause of this particular computer problem.
4. Strange noises and vibrations.
This is almost totally a hardware issue. You computer is made up of thousands of parts. Its not unheard of that one of them can become unhinged. Overheating can cause expansion of wires and melt some sensitive. High pitch noises such as squaling or whining sounds can be cause electronic components. Whatever the reason, you conduct a small investigation. Remove the case and run the computer to discover the origin of the computer problem. If its not a simple matter such as a loose wire or fan issue, it may be time to call a computer tech.
5. Your home page, default search engine, or web browser has changed itself.
This is also known as "high-jacking". Spyware has been installed on your computer via social networking or from email link. This action has allowed spyware to install a java script into your web browser. The spyware then sends a message to your browser to change your user settings. For example change your home page to another web page.
As you have discovered from reading the article, the most common computer problems can be handle quite easily by simple maintenance of your PC. Net time you are suffering from computer problems. Take a few minutes to run some diagnostic test before rushing out to computer technical center claiming your PC is broken. When all you need to do was just make sure it was plugged in.

Similarities Between the Computer and the Brain

Have you ever realized that the brain and a computer have nearly similar functions? For example, if you download something to your computer, it is just the same as the brain downloading new information during lessons in class. The same thing goes with uploading a file or an image from the computer to the internet; Your brain does the same thing by uploading something you learned in class and projecting it onto a piece of paper. For example, your brain downloads an image when you see something, and then uploads it to you drawing a picture of something you have seen. Of course even the world's most powerful supercomputer can not rival a human brain, but these are some examples of the similarities between man and machine that can be identified. Probably in the future, where humans have developed some high technology they will be able to create near-human computers.
Here are some other similarities between the computer and the brain:
Functions and Purpose
Both are used for storage of information, to process information and to run tasks.
Functions: Both are used for mathematical calculations, carrying out complex algorithms and to storing of critical information.
Role in society
Both play extremely important roles in society, commerce, entertainment and science
Every single living creature survives by quick thinking and reflexes, that includes us. The computer today plays the most important roles from specialized systems controlling production production factories to little "fuzzy logic" chips in washing machines that intelligently monitor the washing process .
Combining components
Both work by combining the processes of several components and parts to perform their tasks.
A computer consists of many parts, including a motherboard (which is also made of several components), the disk drives, the processor, graphic cards and many more ... all of which has its own roles in the computer's processes.
Like a computer, the brain is formed out of parts. Beside having the left and right brain, there are also parts of the brain that take care of emotions, mathematical calculations, body co-ordinations and many other tasks needed for our daily activities.
Electrical signals
Both work by transmitting "logic signals" to each of their parts. Signals are both electrical
Ie A computer works by using binary ("on" / "off" logical signals known as "bits", put together as "bytes" to represent data.) To communicate internally between components, represent information and store data.
In a way, neurons in the brain are either "on" or "off" by either firing an action potential or not firing an action potential.
Memory capacity
Both can increase their memory storage capacity .
Computer memory grows by adding computer chips / external hard drives / pre-installed hard drives. Memories in the brain grow by stronger synaptic connections.
Self-maintenance
Both computers and brain have repair and "backup" systems .
The brain has "built-in back up systems" in some cases. If one pathway in the brain is damaged, there is often another pathway that will take over this function of the damaged pathway.Similar to a computer, where backup files can be stored in the computer.
Degrading with time
Both can degrade. Computers break down and brain cells deteriorate
Like all machines, computers break down with time. Brain cells deteriorate with age, losing their functions and slowing down because of lower counts of chemicals and hormones in the body.