A computer is one of the most brilliant inventions of mankind. Thanks to computer technology, we have been able to achieve storage and processing of huge amounts of data. We can rest our brains by employing computer memory capacities for information storage. Owing to computers, we have been able to achieve higher processing speeds, carry out critical transactions and that too with great precision and accuracy.
Computers of the earlier times were of the size of a large room and required to consume huge amounts of electric power. However, with the advancing technology, computers have shrunk to the size of a small watch.
Depending on their processing powers, size and area of use, they have been classified into various types. Based on the operational principle, computers can be classified as analog and digital. Based on their processing powers, they can be categorized as mainframe and microcomputers. Based on the usage, they can be grouped under desktop computers, laptops, tablets, netbooks, personal digital assistants (PDAs) and even tiny wearable ones. Here’s more on the different types of computers.
Basis of Classification
Operational Principle Size and Processing Power Use
Based On Operational Principle
✦ Analog Computers: These are almost
A screenshot is a very simple and useful tool, available to any computer user who needs a graphic record of his computer screen. You may want to capture a screenshot from a movie or save a software error message for reference. Whatever be the purpose, this simple technique can be really handy.
Taking a Screenshot On a Laptop
So you’ve heard that there is a facility for taking a screenshot on a laptop but are clueless about how to go about it. It is a very simple exercise as you will discover further.
Sometimes, it so happens that you get a weird snag on your operating system which shows an error and there is a need to keep a record of it. Otherwise you may get a snag in your net connection, which has to be reported to your ISP. What do you do? Go for a screenshot of course. A screenshot can be saved as evidence for anything that happens on your desktop. It makes the communication between software companies and customers simpler when they send a screenshot to accurately describe an error. How
To fix the flickering problem, you should first check the laptop cables for loose connections. Often, it has been reported that the color changes of the monitor are due to faulty wires. It is advisable to disconnect the cables from the connectors, connect again, back and forth, to check if the problem is due to faulty wires. If the screen shows the same problem, when the pins are inserted and taken out, it is usually due to a broken wire or fault within the cable. Hence, cable replacement can do the work in resolving this problem.
Another seemingly less important, but very possible reason for the flickering problem in computer screens is interference of magnetic fields from other gadgets. Yes, check if near your laptop, you haven’t placed speakers, fluorescent lights, cell phones, radios and any other electrical device. If it is so, you must remove any such interfering electrical gadgets away from your laptop. Studies have proved that cell phones do cause screen flickering.
So it is good to keep the work area of your laptop, absolutely devoid of such gadgets. Also, sometimes, a fan in another cubicle can cause a
Over the years, computers have changed the way the world works. They have proved to be an asset not only for the corporate sector, but also in other sectors such as medicine, architecture, communication, research, sports and education. Speaking of which, computers have taken over the field of education, bringing over its influence in every possible manner. These very machines, which were once used only in research laboratories and government offices have now become a common sight in schools across the world. Today, computers have touched the lives of several students living in the remotest part of our planet, be it directly or otherwise.
There is no denying the fact that computers completely rule the life of an average student in any corner of the world, be it in the form of hand-held devices, or printed textbooks (thanks to the use of computers in printing). What follows are some instances of the utility of computers in education.
e-Learning Gets Real
Let’s begin with stating the obvious. Without computers, learning would be restricted within the walls of institutions, and nothing could possibly be more unfair. Knowledge and education is empowering, and the best way to make is accessible to everyone is
A computer is an electronic device that executes certain actions through user-based commands. It is made up of two parts – hardware and software. The computer processes input through input devices like the mouse and keyboard. It displays output through output devices like a monitor and printer. The size of a computer varies considerably, from small personal computers (like laptops, minicomputers, and notebook laptops), to gigantic supercomputers which require an entire building to host them. The speed also has a very large range. Computers have become indispensable in today’s world; let’s take a look at why we’re so dependable on them.
A word processing software automatically corrects spelling and grammatical mistakes. If content needs to be replicated, there are options known as ‘copy’ and ‘paste’ that allow you to do this without re-typing the content. You can print documents and make several copies too. It’s easier to read a word-processed document than a handwritten one, making it effectual for paperwork. You can add images to your document as well, provided by certain features on word processors.
It is a network that connects computers worldwide, to an information source that is free to all,
As technology gets more and more advanced, new techniques and facilities become available. Same is the case with cell phones and the techniques that allows us to record cell phone calls. Let us find out more about it.
Cell Phone Call Recording
Recording cell phone calls allows you to access and listen to the actual conversation that was done during the call. There are a few people who record calls related to critical situations for further reference. Moreover, there are also many techniques that can be used for this purpose; of which, some are not well-known though. Before recording a cell phone conversation, you first need to ensure that it is legal in your state. In some states, it is illegal to record conversations without the consent of the other party.
Recording Facility in a Cell Phone
A majority of the latest mobile phones have the facility of recording ongoing calls. This is probably the easiest way of storing the call recordings. It is just a matter of using the appropriate buttons for starting the recording process. If you have a mobile phone that has this feature, and you want to record a conversation, initiate the call. A majority of cell
A server is a device with a particular set of programs or protocols that provide various services. Together, a server and its clients form a client/server network, which provides routing systems and centralized access to information, resources, stored data, etc.
At the most ground level, one can consider it as a technology solution that serves files, data, print, fax resources and multiple computers. The advanced server versions, like Windows Small Business Server 2003 R2 enable the user to handle the accounts and passwords, allow or limit the access to shared resources, automatically support the data and access the business information remotely. For example, a file server is a machine that maintains files and allows clients or users to upload and download files from it. Similarly, a web server hosts websites and allows users to access these websites. Clients mainly include computers, printers, faxes or other devices that can be connected to the server. By using a server, one can securely share files and resources like fax machines and printers. Hence, with a server network, employees can access the Internet or company e-mail simultaneously.
Types of Servers
Server platform is the fundamental hardware or
“The server is down”, “Cannot establish connection to server”… messages of the like have become commonplace in today’s gadget-dependent world. But what is the server that these messages refer to, and what is its place in a network or an organization’s infrastructure? The answer can be one of two things –
A physical computer, whose task is to provide services to all terminals or computers connected to it, such as grant permission or allocate resources.
An entity in the client/server programming model, where the server is a software or a program, running on one or multiple computers, that manages resources and services of the network, while handling requests from different computers to access said resources.
Features of a Computer Server
From the above definition of a server, it is clear this is no ordinary, everyday computer and hence, its hardware should match up to the requirements of today’s needs.
- Have a powerful RAM or memory. To handle different requests from different computers and perform operations at a speedy pace, with effectiveness, requires a lot of RAM.
- Optimum processor speed. It needs to be sufficient to execute all the commands requested by other machines and multitask as well.
- High-capacity hard drives
I think each and every one of us must know about the evolution of computers. It is one of the most useful machines ever created by humans. The invention of the computer was just the beginning of the ever-increasing thirst for knowledge. I guess, even the inventor of the computer mustn’t have realized the potential that this machine would have. Today, almost all of our work is done by some or the other computing machine. Computers are enhancing technological growth at a rapid rate. Nevertheless, how much ever we know about this super machine, is less. Mentioned below are a few of the little known computer facts.
Fun Computer Facts
Bill Gates, the founder of Microsoft was a college drop out.
On one of the world’s most popular shopping websites, eBay, there are transactions of approx. $680 per second.
There are approx. 6,000 new computer viruses released every month.
Of all the pictures available over the Internet, 80 percent of these pictures are of naked women.
‘Crash Course’ is another name for Microsoft Windows tutorials.
The ‘Email’ is older than the World Wide Web.
There are about five porn pages for
Computers play a key role in almost every sphere of life. They facilitate storage of huge amounts of data, they enable speedy processing of information and they possess an inbuilt intelligence, which if supplemented with human intellect, can work wonders. Owing to their intelligence and speed, computers function on a level close to that of the human brain. They can hence be employed in different fields like engineering, data processing and storage, planning and scheduling, networking, education as well as health and medicine. You might want to take a look at the various uses of computers, before looking at the importance of computers in medicine.
Computers in the Medical Field
Right from efficient data storage and easy access and sharing of information, to conducting medical tests and simulating complex surgical procedures, computers have an important role to play in the medical field. It can be put under four main categories that include:
As in any other field, the importance of computer technology in medicine cannot be ignored.
Storage of Patient Data and Health Information
▸ Computers are an excellent means for storage of patient-related data. Hospitals employ computer systems to
Coaxial cable connectors are also commonly called F connectors, and are used in places where television signals and radio frequency are necessary. F connectors are commonly used for cable and terrestrial television. They are also used as over-the-air cables for satellite television and cable modems. If you are planning to hook a new cable or satellite TV service, you will have to install its cable connectors correctly. Before you learn to do so, buy a coaxial cable RF tester to detect wiring faults and cable connections.
Types of Coaxial Cable Connectors
- UHF connector
- N-type connector
- BNC connector
- TNC connector
- SMA connector
- SMB connector
- SMC connector
- MCX connector
- MMCX connector
Coaxial Cable Connector Installation
Installing these connectors is rather simple, but takes a bit of practice.
Prepare the Coax Cable
Get hold of a coax cable and cut it for installation. Now with the help of a utility knife or razor knife, cut off the black outer sheathing of the cable to ½”-¾” size. Make sure you do not cut the inner shielding. Once the piece is cut, slide it out from the cable and throw it away. Now use a pair of wire strippers by which you can cut the inner plastic coating (white in color) to
In this present age, it is impossible to imagine communication of any kind at all without the Internet Protocol, or IP. Networks around us, including the broadband (or any other variation of) Internet connection provided to us by our Internet Service Providers (ISPs), local area networks (LAN) in our school or place of work, mobile networks provided by our carrier, and wide area networks (Wi-Max, for example), all thrive only because they employ the IP logical addressing scheme, the worldwide standard, as their backbone (or in rare cases, they make use of a different network layer protocol that is translatable to IP).
The IPv4 protocol, which was defined in the early 80s, when the concept of the Internet was still in its nascent stages, has been the predominant IP standard for more than two decades. But since the turn of the millennium, the movement towards shifting to networks with the newer IPv6 architecture has begun. If you are curious to know how and why IPv6 was incorporated in the first place, how it differs from IPv4, and what its features are, you can put your doubts to rest, as we at Buzzle have laid out an in-depth comparison of
Did You Know?
Powerline network adapters can be very easily deployed for extending the Wi-Fi network to a remote corner of your house or building.
Powerline networking is one of best methods to convert any home into a smart home. There are no deadspots in a powerline network unless your room doesn’t have a power socket. Powerline networks transmit data through the existing electrical wiring of a structure. Now, before you set up a powerline network adapter, here is how it works.
Powerline networking is based on the fundamental concept on OFDM (Orthogonal Frequency Division Multiplexing). The powerline adapter superimposes its high frequency signal composed of user’s data on to lower frequency sine wave signals (50- 60 Hz). Did it ring any bell? The alternating current that we use in our homes has a frequency of 50-60 Hz.
A powerline network adapter is also known as HomePlug. These HomePlugs have rated speeds of 85 Mbps, 200-500 Mbps and 500-1 Gbps for HomePlug v1.0, HomePlug AV, and HomePlug AV2, respectively. Setting up a powerline network adapter is a fairly easy task and is explained in a few simple steps given below.
Just ensure the following things before you begin.
These days, for an average Joe, buying electronic hardware has become a nightmare. As soon we open any online shopping portal and enter our keywords, we are greeted with too many results matching our search terms. If you too do not have much interest in electronic or computer hardware, then it is likely that you are perplexed with the number of choices you have.
One such piece of equipment is the network interface card. This card can be used to connect a computer to a hub, a modem, a router, etc. These network devices may in turn connect the computer to a PAN, LAN, MAN, WAN or the Internet. Before we turn to the points to consider before buying one, let’s first try to understand the basic types of NICs.
Types of NIC
Based on the type of medium that network interface controllers use for communication within a network, they are broadly classified into 2 categories:
➥ Ethernet Network Adapter: Ethernet is a wired networking standard (IEEE 802.3) for network communication. If you are a fan of a hard-wired network adapter, then this is the way to go.
➥ Wireless Network Adapter: Wireless network cards use IEEE 802.11 standard for transferring data
It’s in our nature to be clumsy the moment we let our guard down and spill the drink on the laptop. The consequent panic is also natural, sadly. In case you don’t panic, there are some things that you can do to save your laptop.
Steps to Clean and Save Your Laptop
Regardless of the drink that you drop, the first thing you need to do is shut your laptop down. I would prefer a cold stop, which is pressing the power key till the laptop shuts down. After that, remove the laptop battery and A/C adapter attached to your laptop. If you have any external devices or other cables attached to your laptop, take them out before you move around. If we spill a drink on the laptop, we will naturally panic and do something unnecessary. Try not to get tangled in the wires when you’re getting up, you will just add to the damage.
Draining the Liquid
After you’re sure the laptop is switched off and the battery and all the devices are disconnected, turn your laptop upside down and gently shake it. Most laptops now come with spill-proof keyboards so the liquid should just flow out
When I was in college, one of my friends showed up late for a presentation. As he sat beside me and switched on his laptop, I noticed that it had very prominent glowing spots on the screen while the rest of it was relatively darker than usual. I was perplexed because I did not know that something like that could happen to your laptop! When I asked him about it, he told me that he had accidentally spilled cola over his laptop screen! Poor thing, the laptop had crossed its warranty period 2 months before the incident. Good heavens, how does anyone be that careless? But, let’s face it. Most of us give in to lethargy after 6 months of buying our beloved MacBook, Dell, Vaio or HP. The power cord that was once pulled out oh so gently like you could snap its bone if you were a little harsh, is now pulled out like you could give it multiple fractures. But, hey! That is a wire so you don’t care much. And then, the day comes when your beloved, ahem, laptop doesn’t respond to you and goes blank like it breathed its last, you sit there
If you find that your laptop screen has gone black suddenly, you must know that there are a number of possible reasons for this. It would be impossible to accurately ascertain the exact cause by mere speculation, as there are many wires, connectors, and devices, that need to function properly, to keep the screens of laptop computers working properly. If the screen turns black randomly then you must not panic, and should follow a systematic troubleshooting procedure.
One of the most complicated reasons the screen goes black is a crash. This could occur for a variety of reasons, and is often difficult to fix. You will have to take the machine to a computer repair shop, and they will open up the laptop there to find the cause. Needless to say, this could set you back by a few hundred dollars as well. The crash could be caused by overheating, or maybe even a loose power supply cable. One solution for you is to play an audio file if the laptop goes black. If it does not play at all, then something is wrong with the entire system, but if the audio file plays, then it is
It can be really annoying when you are bang in the middle of an important presentation, or completing a report, and your laptop battery decides to give up the ghost. While in most cases you might get time to save your work, the interruption itself can cost you dearly. Worse is if you don’t get time to save what you were working on, and all your hard work is lost. Though an annoying problem, if you take care of your laptop battery, then you should never face this situation. Of course, don’t expect unrealistic battery times; realize that even the best batteries will provide you only 2-3 hours of backup, depending on what programs you are running. Here are some tips to follow to ensure that your battery does not die on you in just 10-30 minutes.
How to Make Battery Life Last Longer
1. Dim Your Screen
Almost all new laptops come with an option of dimming the screen. Some of these laptops also have an option to control the CPU’s cooling performance. Cut these to their lowest levels to make the most of your battery savings.
2. Close Extra Programs
When your laptop is on battery power, make sure
Are gaming laptops used especially for gaming? If so, does that mean we will need a normal laptop for all our data-related needs? These are some questions that every newcomer in the computing arena may have in mind. Laptops, even though classified as per needs, have common specifications. The only difference in these specs lies in their ratings. One laptop may have a higher rating of a certain spec, while the other may have the same for a different set of specs. This Buzzle write-up highlights the basic differences between gaming and normal laptops.
At a Glance
▶ Gaming laptops have all the desired features like a normal laptop does, but high performance features are needed for the former.
▶ The integrated graphics card, that most laptops have, works for normal laptops; however, for a gaming laptop, it is necessary to have a dedicated graphics card. Few laptops come with two graphics cards that further enhance the gaming experience.
▶ High-speed processors are a must for gaming laptops, so as to load the game quickly. However, for a normal laptop, a quad-core processor is not a mandatory feature.
▶ The size of the RAM is usually on the higher side in gaming laptops.
Laptop charger is an inseparable accessory that comes with a laptop computer. It is an AC adapter that comes with a long cord that can be connected to the laptop for the purpose of charging rechargeable laptop batteries. As we all know, this charging is an essential to keep a laptop working. Most batteries are made of lithium-ions, which generally degrade with heavy charging and increased internal battery resistance, which is also called cell oxidation. Similar to all electronic devices, these chargers are also not free from problems. One of the commonly mentioned problem is laptop Charger beeping and not charging the laptop battery. Well, there are quite a few things that might be responsible for this. In an article, you will understand the possible causes as well as solutions for this problem.
Problems with Adapter
As we know, the charger works on an AC adapter. If there is some problem with the AC adapter, your charger might start beeping. For instance, there might be a loose connection in any of the internal components of the AC adapter. In such cases, the charger makes noise only when it is connected and on other occasions it doesn’t make any noise.