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Computer Hardware Engineering

In simple words, computer hardware engineers are people, who take care of all computer hardware maintenance, they are assigned to. To enter this field, one obligatorily needs to have strong technical knowledge of computers. A software computer engineer may not know much about computer hardware, but a computer hardware engineer is well aware of how software works. This knowledge helps him solve hardware problems more efficiently and responsively.

Professionals in this field are responsible for carrying out research, contriving, participating in the development, and examining the installation, troubleshooting, and maintenance of all computer hardware. They are directly related to the care and maintenance of computer chips, motherboards, network components and devices, servers, databases, keyboards, modems, printers, scanners, and many more computer peripherals. The speedy advancements in information technology are predominately the outcomes of hardworking efforts made by these professionals.

Due to a rapid change in several technologies, computer hardware engineers are required to update their knowledge base accordingly, so that they can provide every possible service to their clients and customers. In this regards, they are offered technical trainings by companies which they work in. Companies also allow


The Computer Input Devices

Once upon a time, the only way one could get data into computer memory, was through a keyboard. However, with the speed of technological advancement, newer and faster devices have been created. This helps one get loads of information transferred into the computer, without having to do much manual work.

What are Computer Input Devices?

These devices are hardware components that help you transfer information into a computer. Without them, your computer will be more or less like a television set. So an input device is any peripheral device that helps feed data and control signals to a computer. These devices can be broadly classified, according to the modality of input, discrete/continuous input, and the degrees of freedom involved. Some are classified according to their pointing ability, as follows:

  • Direct input devices, where the pointing is done directly in the space where the cursor is seen. Examples are touchscreen pointers and light pens.
  • Indirect pointer examples are a trackball or mouse.
  • Pointers for touchscreen, where the positional information is absolute or relative, when the mouse is lifted and positioned according to need.

List of Input Devices

These devices help in


Difference about Computer Software and Hardware

While computer jargon can be hard to get to grips with, two terms that pop up extremely often in any computer discussion are the words “software” and “hardware”.

But what is the difference about computer software and hardware?

These two terms refer to the most fundamental parts of computer systems. Both of them are vital for any computer to operate, and they are also dependent on one another.

Definition of Computer Hardware and Software

When we talk about computer hardware, we mean the actual components of your computer. Such things as the computer’s motherboard, its CPU, the video card, the keyboard and mouse, these are all “hardware”.

The difference between computer software and hardware is that software refers to the coding and various programs that you have on your computer. These include your operating system (Windows etc), media players, Photoshop etc.


Computer hardware is usually multi-purpose in that it is able to perform lots of different tasks. For instance, your computer monitor doesn’t just display images on screen; it also shows videos,


What’s Processor Cache ?

Main memory is a computer device with the slowest access rate. If the CPU needs a data item, a request is sent to the main memory via a memory bus. The main memory then searches for the data item and sends it back to the CPU. Lot of time is wasted in this entire cycle. What if the data item were stored somewhere close to the CPU? The working of processor cache is based on a similar concept. To understand the concept of cache memory, we will take an example of a library throughout this article.

Suppose, we have a library, with a single librarian. If a person comes and asks for Harry Potter Part I, then the librarian goes to the bookshelf and retrieves the book and gives it to the person. When the person is done with the book, it is restored to the shelf. If, any other person comes and asks for the same book, the cycle is repeated again. This is exactly how a system works without a cache memory.

Why do we need processor cache?
Now, let’s see what happens in the presence of a cache memory. In our library example, let’s consider a drawer


Get a Computer for Free

Generous Gesture
Microsoft does its bit by giving $2 million a day in software donations to nonprofit organizations all over the world.
You can get access to a computer for free if you take the necessary efforts. You might not get the latest, hi-tech equipment, but you can solve your word-processing requirements, connect to the Internet, and do other simple tasks with an older computer.

There are a flock of organizations who are trying to ensure that free computers are made available to low-income families or the elderly. In this Buzzle article, we give you some ideas to get a computer for free.

E-waste Recyclers

Get old, used, non-working computers from e-waste recyclers and repair them. This step involves some technical know-how. You have to visit a local e-waste recycler in your area and get a used, non-working computer from them. You can also ask people or organizations to give you their out-of-order computers instead of throwing them. You then have to employ all your technical skills to get the computer back to its working condition.

Charitable Organizations
Get involved with a church, school, scout, or any other charitable institution that has a computer literacy wing. There are


Ways to Upgrade Graphics Card

The graphics card is also known as video card, graphic controller, graphics accelerator or display card. It is a PCB (printed circuit board) that has three major components. These components are video memory, video BIOS, and graphics processing unit.

The graphics card should be changed if it gives a poor performance or if you want more speed options for the computer games. In the first case, you need to verify that it is the reason for the poor performance and not the computer. To do this, use the scan disk or defragmentation options and look for bad sectors on the hard disk. You can also try using other ways to speedup your computer. If they do not work, you can conclude that the lowered performance is due to the faulty working of the card. Once it has been established that the graphics card is responsible for the low speed, you should upgrade it.

Some video cards are integrated in the motherboard and some are externally connected to the computer. Older versions of motherboards used a PCI (peripheral computer Interconnect) slot in order to plug-in the video card. Newer versions of computers use the accelerated graphics port (AGP). The latest version


Tips Computer Hardware Maintenance

What is computer hardware? Hardware components like the monitor, keyboard, CPU (Central Processing Unit), mouse, and other I/O (Input-Output) devices constitute a computer. The working of the monitor, keyboard, mouse, and I/O devices depends largely upon the CPU. Due to some minor causes, like loose connections or dust saturation, any of them can stop functioning.

Faults occurring in the CPU are most hazardous, as it has a very complicated structure. The CPU is an assembly of the motherboard, hard disk drive (HDD), random access memory (RAM), compact disc-read only memory (CD-ROM) drive, and the floppy drive. Unless you are well-acquainted with the CPU hardware, it is extremely difficult to pinpoint exactly where the fault has occurred. If any one of these components fail to perform, there are a few repair tips that can be followed. In order to view the circuitry inside the CPU, its casing has to be removed.

The entire functioning of the computer depends on this component. The processor chipset, that performs all the logical operations of the PC, is embedded in the motherboard. Ribbon cables, power supply, CPU, and RAM are the things to be checked first on the motherboard. Check if any of the ribbon cables


Different Hardware Components of Computer System

Due to advancements in Information Technology (IT), there have been various technologies that are being used all over the world. And when it comes to technology, a combination of hardware and software is evident. There are many different types of computer hardware and software that we use in our day-to-day lives, be it at a personal or professional level. Day by day, newer technology is being put to use. On that note, this article below gives a list of the hardware components of a computer system.

The types of devices mentioned below are individual components, which play a very important role in making the operation of the system possible. This is just a brief explanation of all parts.


This is the most important type part. It is a circuit board, wherein various parts of the system are set up. All input devices work when they are connected to the motherboard. RAM, CPU, and other crucial peripherals are installed on the motherboard. You can say that this is what runs the whole system.

Random Access Memory (RAM)

The RAM is a small chip that fits on the motherboard. It does the job of storing data on a temporary basis. RAM chips are generally


Types of Networking Devices

A computer network is not made up of one machine or even one type of machine. It is a carefully designed system of different hardware components (networking devices) working in tandem with various rules and communication protocols. From the network scenario in a household, to a medium scale network in a school or mall to a large, border-crossing network of a corporation or service, a computer network is made up of various hardware parts, some standard and some rare and more complex. So, what are the different types of network hardware? Read on for a listing of such devices and a brief explanation of each.

Types of Network Hardware

Cables & Wires
Everything may be turning wireless nowadays but at least 2-3 wired connections have to exist somewhere in a computer network. Connecting a desktop to a router or the router to the modem, such connections are always wired and the common cable type used is CAT5 RJ-45. Wiring is typically thought of as being a Layer 1 (physical layer) device as raw data or signals are transferred from one end to the other.

Network interface cards is easily one of the most important components of a computer network. It


Ways Access Computer BIOS Setup

What happens when you turn on your PC? Lights come on the keyboard and monitor, the computer’s brand logo may appear on the screen, then the operating system loading message appears. This is all occurring on screen, but in the background, your computer is actually powering on and preparing its external and internal parts. Many assume the Operating System (OS) is the first program a computer loads and operates on but the actual start-up program is the BIOS.

BIOS stands for Basic Input/Output System, which is inbuilt in every PC during manufacturing and is loaded, run and executed when you press the power ON button of your PC. The BIOS is a sort of firmware interface for a computer. Different components, such as pen drives, graphics card, keyboard and mouse and disc drives attached to a computer, need to be initialized and identified to the computer. The BIOS does this in the form of a check-list (“turn USB ports on”, done) and this procedure is known as POST (power-on self-test). The operating system itself is a program, which needs to be loaded and executed. This too is performed by the BIOS, which locates the OS program on the computer’s


Ways to Easily Update Computer BIOS

BIOS stands for Basic Input/Output System, and it is typically a software that is embedded on the motherboard of a system. It controls the hardware such as disk drives, keyboard, mouse, display settings, pen drive etc., that are attached to it, and sends the information to the Operating System (OS) of a computer. Motherboard is the center of coordination in a computer that unites the hardware of the system and enables communication between each other. Any upgrades that are required in a computer depends on the type of the motherboard and its inbuilt features.

What is Computer’s BIOS?

The computer’s BIOS is basically an EEPROM, which stands for Electrically Erasable Programmable Read-Only Memory. EEPROM is a non-volatile memory which means that, the information which is stored can be retained later even when it is not powered. EEPROM can be modified by the user, and can be erased and reprogrammed. Most of its components are not serviceable, as it is soldered to the motherboard. The firmware i.e., the coded instruction in the BIOS can be updated or upgraded. In modern computers, it is inbuilt on a chip called CMOS, which stands for ‘complementary metal oxide semiconductor’. The common type of EEPROM


Tips and Tools Computer Hardware Troubleshooting

The computer hardware includes devices, such as the mouse, keyboard, monitor, printer, scanner, etc. All are machines and are bound to face technical issues at some point or the other. However, you can perform some basic computer troubleshooting tips to make them functional. If they don’t seem to work with the troubleshooting tools, you need to send them for hardware repair. The paragraphs below offer some quick tips for the various hardware devices.


  • If the monitor is not working, the first thing you need to do is to ensure that it has been turned on by pressing the on/off button.
  • Next, check if the cable, which connects the computer monitor and the CPU is connected properly. If not, connect it in a proper manner, or remove and plug it in again.
  • Also, make sure that the cord, which is used to power the monitor is plugged in the UPS the right way.
  • If these tactics do not work, you need to check both the cables on a different monitor, which is in a working condition.
  • If the other monitor doesn’t work with any one of the cords, that cable needs to be replaced. If the other monitor works with

Types Computer Hardware

Computer hardware consists of electronic and mechanical elements of a computer. The hardware includes the system unit which has components such as the motherboard, CPU, chipset, hard disk, RAM, video card, and sound card. The hardware also includes the peripherals that are used for input, output, and storage of data.

Different Kinds of Computer Hardware

Other than the hardware formats mentioned earlier, there are other types of computer hardware as well. For example, the CPU processes and manages information and can be called the brain of a computer. Then there is the internal bus that connects the motherboard to the video and the sound cards, and the PCI bus that connects the hardware devices to the computer. There are also the northbridge and the southbridge form the core logic chipsets, which control the exchange of information between the hard disk and the computer. The northbridge connects the southbridge to the computer, and they both determine how fast the system can access memory. The external bus is controlled by either the southbridge or the PCI bus. The chipset is used for communication between the CPU and the memory.

The RAM is the random access memory that stores and processes the information that


The Computer Output Devices

Output devices of computer are types of peripheral hardware connected to the computer either using cables or over a wireless network. An output given by the computer can be in the form of a display on the screen or a printed document or a song that is played. Immaterial of whether you have desktop computers, laptop computers or supercomputers, you will require at least one output device.


A monitor is also called video display terminal (VDT). The users can view the visual display of the processed data on the monitor. Computer monitors come in a variety of screen sizes and not to forget, visual resolutions. All monitors have a video card, which processes the data into images, to be eventually displayed. Cathode Ray Tube (CRT) and flat panel displays are the two types of monitors. CRTs are cheaper, and have good viewing angle. They are also bulkier and consume more power. On the other hand, the flat panel displays have no magnetic interference and lighter. They are also costlier.


Printer is an external hardware device, which takes processed data from the computer to generate a hard copy of the same. After the monitors, printers are the most used peripherals of


Ways Motherboards Conduct a Symphony of Data

UNDER the big top of your computer—or the little top of your smartphone or tablet—the microprocessor (the central processing unit or CPU) is always the headliner. You don’t see ads or reviews raving that a new PC has “revolutionary 100-ohm resistors!” Flash drives and incredibly realistic displays have the top supporting roles, but when it comes to the components on the motherboard—the mother of all boards—the CPU steals the spotlight.

There are many good reasons for the CPU’s fame, but like all stars, it owes a lot to the little components—the circuit board supporting parts without which the central microprocessor would be only a cold slab of silicon. And conversely, without the CPU and other specialized processors to keep all the parts running in harmony, the motherboard would be an orchestra without a conductor. Its components wouldn’t be able to hear what other members are playing. Electronic messages meant for the CPU would crash into the chips and each other, moving so fast there would be no time to read their license plates. Other messages would arrive like dying murder victims at the ER, so weak they can only whisper their crucial clues in pulses so faint


USB Microphones for Your Recording Need

A lot of folks are doing podcasts and voiceover work and even recording music on their home PCs and mobile devices. Even if you’re not doing this type of recording, chances are you’re chatting on Skype or Google Hangouts.

However you’re talking to your PC, you want to be heard – and heard well. The number-one thing that most affects the quality of your recording is the microphone you use. The better the mic, the better you’ll sound.

For computer-based recording, you need a microphone that connects directly to your PC’s USB port. While you can use mics with traditional XLR or 1/4″ connectors, going direct to USB is the best way to get that audio signal into your computer.

So how do you choose the best USB mic for your needs? Well, the best mic isn’t always the most expensive one. Let’s look at the top 10 USB microphones on the market today, and see which are best for your own recording needs.

Choosing the Best USB Microphone for Your Needs

When you’re recording your voice or instrument on a computer, the easiest way to connect is via USB. Most computers simply


Ways to Clean Your Computer Keyboard

One of the best ways to keep a keyboard in top condition is periodic cleaning. As preventive maintenance, you should vacuum the keyboard weekly, or at least monthly. When vacuuming, you should use a soft brush attachment to dislodge the dust. Also note that some keyboards have keycaps that come off easily, so be careful when vacuuming; otherwise you may have to dig the keys out of the vacuum cleaner. I recommend using a small, handheld vacuum cleaner made for cleaning computers and sewing machines; these have enough suction to get the job done with little risk of removing your key tops.

You also can use compressed air to blow the dust and dirt out instead of using a vacuum. Before you dust a keyboard with the compressed air, however, power off the computer, unplug the keyboard, and turn it upside down so the particles of dirt and dust collected inside can fall out.

On most keyboards, each keycap is independently removable, which can be handy if a key sticks or acts erratically. For example, a common problem is a key that does not work every time you press it. This problem usually results from dirt


Learning about computer hardware

This was the way I learned about computer hardware. In Sydney, Australia where I live we have a council cleanup. During this time, everyone puts out rubbish and their junk onto the side of the road for the council to pick up on a certain date. Included in this rubbish were computers, lots of computers. So when this council cleanup was in my area, I would jump on my bike (often with some of my brothers) and ride around looking at the junk piles.

I started to collect computers and have a look inside them. I was really interested in how these complicated machines worked. Then I started to fiddle with some of the components and learn what each one did. I wanted to upgrade my computer so I tried adding a hard drive. I didn’t know how so I searched Google or got a book from the library.

After successfully doing this, I thought that my CPU (central processing unit) was a bit slow, so I tried to change that. Now this was my embarrassing moment and one that I look back on and laugh. Now in my family we have many computers. Mum had


Ways Computers Work

So how do computers work?

Have you ever just looked at a computer and go “how does that work”?  If you think about it, computers are quite amazing.  You press a few buttons and you can talk to your friend over the other side of the world, you can learn anything you want on the internet, you can listen to music, watch TV, write stories, make videos and do much much more.

The more you think about it the more amazing it is and the more crazy it is that a bunch of computer bits can do this.  So how do computers work?

Well I will try and answer this the best that I can.  Basically a computer can consist of two broad categories, hardware and software and the way a computer works is between these two working together. I will oultine them both briefly below.

Computer Hardware

If you have been reading any of this website, then you probably already understand what computer hardware is, because that is what this website is about. Like seriously,

So briefly: computer hardware is the physical computer that you actually see, this includes:


Powerful Supercomputer Inched Toward Exascale

In June, the ranks of the Top500 list were rearranged, and the title of world’s most powerful supercomputer was handed off to a new machine—China’s Sunway TaihuLight.

The Wuxi-based machine can perform the Linpack Benchmark—a long-standing arbiter of supercomputer prowess—at a rate of 93 petaflops, or 93 quadrillion floating-point operations per second. This performance is more than twice that of the previous record holder, China’s Tianhe-2. What’s more, TaihuLight achieves this capacity while consuming 2.4 megawatts less power than Tianhe-2.

Such efficiency gains are important if supercomputer designers hope to reach exascale operation, somewhere in the realm of 1,000 Pflops. Computers with that capability could be a boon for advanced manufacturing and national security, among many other applications. China, Europe, Japan, and the United States are all pushing toward the exascale range. Some countries are reportedly setting their sights on doing so by 2020; the United States is targeting the early 2020s. But two questions loom over those efforts: How capable will those computers be? And can we make them energy efficient enough to be economical?

We can get to the exascale now “if you’re willing to pay the power bill,” says Peter Kogge, a