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Monthly Archives: February 2017

Ways Choosing the Most Competent Computer Technician

However, this is one of the most difficult moments for these people. Most of them are usually unprepared on what they can do to find the best computer technicians. If anyone who owns a car knows they need to be in contact with a reliable mechanic, one will wonder why some of the computer owners are caught pants down with computer repairs.

If you want to choose the most competent local computer technician, you have to ask yourself some questions first.
  • How soon do I want my computer repaired?
  • What exactly is supposed to be fixed on my computer?
  • Am I financially prepared for the task?
  • Do I have the time to look for an experienced technician?

Once you ask yourself all these questions, you will be ready to go to the field and find a reliable expert. One thing with computer specialists, you may not easily tell if they are good or not. You have to evaluate them thoroughly to determine their abilities. Even when they are mobile computer repairs, you still need to assess them. If in doubt, you use the tips below to evaluate your future computer repair expert.

  • They must have all the required academic qualifications. You can call their training institutions to confirm they were once students.
  • They need to be licensed to operate that business. Dealing with unlicensed technicians puts you at risk of causing further damage to your computer.
  • Choose an experienced repairer. If you want to have the services, you need someone who is skilled and experienced.

Apart from the factors mentioned above, your expert of choice should have the following personal qualities to be certain that you will get reliable services.

  • Easy to work with. They should not be complicated or have clashing personalities.
  • Patient to listen to you and be ready to explain to you the fault with your computer.
  • Understanding and ready to negotiate their charges
  • He or she should be honest and trustworthy to their deals. This means that they will even give you guarantee for their repairs.

History of the Computer Printer

Here’s a bit of background into the history of the printer.

The first computer printer

The first high-speed, non fluid printer was manufactured in the early fifties, by Remington Rand. This printer was used in combination with the UNIVAC computer. It was essentially an evolved form of the electric typewriter, and the same ‘typing’ mechanism was used in these printers, but the actual printing was directed by the computer, instead of fingers.

The laser printer

A type of dry printing press, initially called electro-photography, was invented by Chester Carlson, in 1938. This system was later called xerography. It became the basis for the laser printer technology that we know today. In 1975, the IBM 3800 laser technology made it possible to print text and high quality graphics onto paper.

The dot-matrix printer

In 1970, Digital Equipment Corporation produced the first dot-matrix printer, the LA30, which was able to print 30 characters per second. Improvements to speed and usability followed the same year when Centronics Data Computer Corporation introduced Model 101 with printing capabilities of 165 characters per second.

The ink-jet printer

The first laserjet printer was introduced by Hewlett-Packard in 1976, although it was not marketed until the late eighties. It was slow, had problematic ink cartridges and made nasty smears. The technology behind the laserjet was invented by Canon. Having gone through many changes and improvements over the years, inkjet printers are now among the most popular in the world.

The printer as we know it today

The printer of today is kind of a centipede. Faster and more versatile than ever before, this nifty and innovative piece of electronic equipment does not only print anymore. It can do your photocopying and scanning as well, which doesn’t only make our day-to-day jobs a breeze, but it also gives us a lot of extra time and reduces the need for physical space in our offices. Printers have also become much more economical in price, which makes it possible for everyone to own one, whether for personal use such as printing photographs, or for use in our small home businesses.

Revolutionary 3D printing technology

One dimensional printing has given way to two-dimensional printing, and in the past couple of years we’ve seen the development of the incredible 3D technology emerge, which opens up a whole new world of possibilities. 3D printing has become extremely popular, with many printing companies jumping on the bandwagon. 3D printing applications are unlimited. This technology is used in all sectors of today’s design and manufacturing industry, from prototype testing to molding and casting to fine feature applications. The marketing sector is also hugely benefitting from this revolutionary printing technology with the creation of comprehensive visuals and all types of other marketing aids. Other current uses are the manufacturing of prostheses and even bio printing of live tissue for the creation of organs for transplantation purposes. The possibilities are endless.

Processor- What it’s ?

The processor, or the CPU (Central Processing Unit), is typically thought of as the brain of the computer. It controls all of the processes done through the computer. The processor of a computer is the hardware within a computer that carries out the instructions of a computer program. It does this by performing the basic arithmetical, logical, and input/output operations of the system. The overall fundamental operation of most CPUs is to execute a sequence of stored instructions called a program. These instructions are kept in some kind of computer memory.

There are two typical components to all CPUs. These are the Arithmetic Logic Unit (ALU) and the Control Unit (CU). The ALU performs arithmetic and logical operations, while the CU extracts instructions from memory and decodes and executes them. The CU will call on the ALU whenever necessary.

There are four steps to just about every CPU: fetch, decode, execute, and write back. During the first step, fetch, an instruction is retrieved from program memory. Next, during the decode step, that instruction is broken up into parts that have significance to other parts of the CPU. Then, various portions of the CPU are connected so that they can perform the desired operations, this is the execute step. Finally, the results of the execute step are written back to some form of memory. Typically, results are written to some internal CPU register for quick access by subsequent instructions. So, basically, the CPU is responsible for reading instructions from the computer’s memory, reading data specified in arguments from the memory, and writing results back to the memory.

So, how does a processor do all of the above? Well, hardwired into a processor’s design is a list of basic operations that it can perform. These are called an instruction set. The operations of the CPU include adding or subtracting two numbers, comparing numbers, or jumping to a different part of a program. Each operation itself is represented by a specific sequence of bits. This sequence is called opcode. To execute an instruction in a computer program, the processor uses the opcode for that instruction, as well as its arguments.

When looking at processors, there are two very important factors of the processor to consider. These are the clock rate and the core count. The clock rate is the speed at which a microprocessor executes instructions. Processors require a fixed number of clock ticks, or clock cycles, to execute each individual instruction. The faster the clock rate, the more instructions the CPU can execute per second. So, you want to make sure your processor has a good clock rate. The core count identifies how many independent CPUs are running within a single architecture. The higher the core count, the more potential for better multiprocessing. So, similar to the clock rate, you want to be sure your processor has a decent core count. Core counts are usually identified with a prefix (ex: dual-core, quad-core, hexa core, and so on).

The CPU controls all processes that are done through the computer; this is why it is known as the brain of the computer. It is important to understand how a processor works, and its key components, so that you can better understand your computer in general.

Wallpapers for Computer

Are you using ordinary wallpaper with an average resolution? Are you unable to see the fine details of the images in your wallpaper? This really sucks? Here we have a solution. Try some HD wallpapers. Now the wallpaper technology has entered into new era of high definition. High definition wallpapers have higher resolution than ordinary wallpapercovers. They are fine, sharp images. Bright, sharp wallpapers are better than dull wallpaper. The HD wallpaper are much like ordinary wallpapers the only difference is in their resolution. Depending upon resolution, wallpaper are available in different sizes and dimensions. HD wallpaper are slightly bigger in their size.

Nature has different creatures which we can use as wallpapers by taking their pictures. These creatures include geographical beauties, charming birds and animals. Every human being loves birds; their charming voice is soul comforting. A bird in our house is like a whole nature in house. Unfortunately we cannot keep birds in our office, work place and college. Then what’s the solution? What if someone uses bird wallpapers? Different bird wallpapers are available online. Some are free of cost. In case wallpaper is copyrighted we have to pay for it. A range of bird and animal wallpapers is available online including parrots, sparrows, macaws, pea cocks, ostriches, and many more. We have to select bird wallpapers according to our nature and love for the type of birds.

What if our pet bird’s picture is available in HD? Obviously we will select that one. Our favorite bird wallpaper in different perspectives like during flight, feed time, sleeping time in nest can be used for this purpose. And their young ones looks soul comforting too. HD bird wallpapers comfort with bright colors, their sharp images and fine details. One feels pleasing when the feather color of our favorite bird is with sharp color boundaries. These birds bring us closer to nature. HD bird wallpapers may or may not be freely available on internet because of their cost.

Animals are true reflections of nature. Like birds we also love animals. Some of them are pet animals. Pets like dogs, cats, horses etc. Running horses in wallpaper is much more pleasing then blunt white wallpaper. In case of animals, a wide variety of wallpaper are available including cats, dogs, lions, deer, horses and many more. Hundred thousands of animal wallpapers are available on internet. So choose these beautiful creatures and their pictures to refresh your mind and soul.