A computer memory is an integral part of every central processing unit in computers. It allows proper functioning of computer applications and it also provides easy access of files stored in your drive. Different types of memory hardware are designed to keep files secure in your computer even without continuous supply of power. It is the reason that you can still view files stored in your compute even after you have shut your unit down, exactly in the same state as you saved it previously.

Computer memory is generally subdivided into two categories: internal memory and external memory. The first type allows faster access of information needed by computer programs to function properly and seamlessly. External memory, on the other hand, are units that are larger in capacity, allowing users to store large files and access them on demand. External memory is usually referred to as storage, whereas internal memory is simply called memory.

You may check out this article to know the differences between memory vs storage and learn which specifications are best for your unit. Meanwhile, here are the four types of computer memory that you should know.

External Memory

External memory or storage is, perhaps, the type of memory that most of us are already familiar with. This is where your files are saved, stored, and retained for future access. It is also called secondary memory owing to the fact that your unit may still function correctly even if these files are removed from your system. It can be embedded in your unit as hard disk drives or solid state drives and it can also be in the form of removable devices such as compact disks, external drives, and flash drives.

Read Only Memory

Read Only Memory, also known as ROM, is a type of permanent memory containing small amounts of data that can be accessed anytime within the system. As its name suggests, the information stored in the hardware can never be removed nor overwritten. It is also a non-volatile memory device which keeps the stored information intact even without power source. The ROM contains important operating system data that are accessed immediately during boot.

Random Access Memory

In contrast to ROM, the data stored in Random Access Memory or RAM is volatile. It means that information kept in the hardware will no longer be retained once power is cut off. This is where small chunks of data are kept temporarily to speed up the processing time. It allows programs to access and read information faster without the need to scan high volume of data stored in external storages. The more RAM your computer has, the more capable it is in executing multiple tasks without lag time.

Cache Memory

Cache memory works the same way as RAM but instead of using the main memory, it comprises smaller bits of data that allow faster loading times in applications. It can act as both temporary and permanent storage device that can be used by applications to load faster and avoid loss of important data too.

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College grades are a measure of how you are faring in your coursework. Poor grades can demoralize and derail your journey of completing school. The grades also help in securing jobs and bargaining salaries once you are out of school. Getting the very best grades in college is not hard. Nonetheless, it requires a little effort. Below are tips on how to get those grades up there:

1) Seek Help from Professionals

Nothing comes easy when it comes to education. You need to set time and study to understand the concepts and the unit as a whole. You ought to study before a class commences to ensure that you have an idea of what will take place. Also, study after class to understand what was taught. Search for extra study materials from the library or online. In troublesome areas of study such as statistics, online platforms such as Homework Doer and Aimhighwriting can provide extra content and support from professionals to help you improve your grades. You can study alone or with a study partner. Additionally, choose a conducive environment to carry out these studies. The place should be quiet and safe. Finally, avoid social media and other things that might distract you while studying to enable proper concentration.

2) Attend Lectures

Taking a nap during class hours might be sweet, but it will cost you your grades. Lecturers introduce topics and tackle hard tasks while in class. Missing out on this leaves you at a disadvantage since you do not get to learn what your peers gained. Lectures also help you keep up with announcements for important dates such as deadlines, exam dates and any changes that might be communicated. While attending lectures, keep time to avoid missing out some of the information that might be shared when starting. For some units, attendance is calculated as part of your final score. It would help if you aced it.

3) Meet Deadlines

Assignments, projects, and other activities have deadlines set. Meeting these deadlines reduces the chance for penalties. Penalties for missing these deadlines can be reduced marks on each late submission or rejection of the whole assignment. This can be costly as the assignment marks account for the final score in each unit. A rejection in some units might also earn you an automatic fail.

4) Select Units Wisely

College offers the opportunity to select the unit you are to take in each semester. Balance out the units to ensure you stand a chance at passing. Some units are complex and require quite some time to complete. Choose one or two complex units per semester to ensure you have enough time to allocate each unit. In addition, units are categorized in levels and you should always pick units available for your level.

5) Make a Plan

While studying, you need to plan your days. This helps you balance your time and the activities you need to engage in. The plan should consist of all school and off school activities that you engage in. It should also state the units to be studied on each particular day. Listing them also helps when you need to reschedule or make plans. You should carry your plan with you to ensure you do not make plans that overlap.

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A computer is incomplete without a keyboard. This is because the keyboard is needed for typing documents or emails and gaming among other things. However, a keyboard wears out with time just like any other device that’s used with a computer. If some of the keys have stopped functioning, you just have to replace the keyboard immediately or you will not be able to work on your projects. The problem is that most people buy computer keyboards without considering the most crucial features.

The confusion happens because there are so many keyboards in the market. In the end, they get disappointed because the keyboard doesn’t meet their needs as they initially thought. Such keyboards are usually noisy, which in return makes you feel like you are using an ancient type writing machine. But when you invest in a quiet keyboard, typing documents or gaming becomes fun as you don’t have to summon all your energy when pressing the keys. Here is a list of the things you should look for when shopping for a computer keyboard.

1. Compatibility and Compact Design

Whether you are buying from an online store or offline store, you should first confirm that the keyboard will be compatible with your computer. Lest you forget, buying a device that doesn’t work with your computer amounts to wastage of money and time. If you own a Macintosh computer, you should only buy a keyboard that’s specifically designed to be supported by Apple computers. You should also check that the keyboard can connect to the computer via USB ports. In fact, Ps2 keyboards are no longer available in the market because manufacturers have phased them out. Besides that, you should check if the keyboard has a compact design or a full size design. A keyboard that features a slim design feels light when you rest it on your lap.

2. Wireless Vs. Wired

Wired keyboards are very popular. However, they are slowly being replaced by wireless keyboards. A wireless keyboard allows you to game or work on a document even when you are away from the computer. This is because it connects to the computer via Bluetooth. It also has a battery for powering the Bluetooth feature. In fact, there are some models that use solar energy. However, the wireless keyboard is not ideal for gaming purposes. This is due to the fact that it delays in sending the commands to the computer.

3. Keystrokes and Advanced Features

It’s important you literally press the individual keys so that you can get their feel. If the buttons have to be pressed hard to function, you will not enjoy using it especially if you are a heavy user. An ideal keyboard is one that has feather-touch keystrokes. Such a keyboard rarely makes any noise when you press the keys because it has rubber dome switches that absorb the impact of each key. You should also opt for a keyboard with advanced features such as multimedia shortcuts and water drainage to ensure it’s not damaged by water.

4. Price

The price of a keyboard is normally determined by the features it has and the brand. You should expect to pay a premium price if you opt for a top of the range brand that has many features. But that doesn’t mean that you can’t get a good keyboard at a fair price. To increase your chances of getting a fair deal, it’s advisable you compare the prices of different stores. This is because price tends to vary from one store to another. Moreover, you have the option of buying a secondhand keyboard. All you have to do is test it before making a purchase. If you are buying from an online store, make sure they have a return policy so that you can replace it if it doesn’t function as per the specifications.

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A beautiful home is much more than a nicely designed house. The garden also needs to look good and lively. It should give a nice cozy feeling to you and your visitors when they approach your property. But how do you liven up your garden, and make your home adorable? Well, you will be thrilled to know that it does it much to achieve it. In fact, you can do it yourself, and it will work just fine. To help you out, here are the top 3 things you can do to liven up your garden.

1. Make use of online reviews

Unless you are an expert in landscaping, you may find it challenging to liven up your garden by yourself. Luckily, the internet has made things so much easier, to the extent that you can learn pretty much anything and DIY. When it comes to gardening, there is a lot of information online about how to make your garden better. For instance, Cozy Down Home has amazing information about gardening and other aspects of home improvement. Make use of it, and learn how to transform your garden, and make your home eye-catching and therapeutic.

2. Plant perennials

Part of the reason why your garden may feel dull is the use of plants that have very short-term lifespans. This leaves the garden looking dull and neglected, especially if you don’t have the time to keep replanting. To avoid this problem, and keep your garden looking glam all year round, plant perennials in your garden. Perennial plants like Avens are very colorful and are there all year long. Best of all, it doesn’t cost much to spread them all across your garden. That’s because, you can divide mature ones and plant them all over the garden. Within a few months, you will have a colorful looking garden all from a single plant. Of course, for better results, you need to ensure that the grass around the perennials is well taken care of. The contrast between green grass and the red color of avens, for instance, makes for a perfect garden.

3. Make creative use of outdoor lighting

The only time that most people make use of outdoor garden lights is during major events such as Christmas. However, that doesn’t have to be the case. Lightning is one of the best ways to keep your garden looking nice and lively all year long. All you have to do is place them strategically all across the garden. This creates a very lively ambiance, especially at night. With a nicely lit garden, you will find yourself drawn to the outdoors, to enjoy the fresh air in the evening. With most garden lighting, you can DIY, and set it up according to your desires. However, If you are not in a position to do it by yourself, you can always use the services of a garden lightning expert. The key thing is to get the lighting done right, so that your garden can be lively, and give you a nice relaxed feel when at home.

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Image source: Pexels

Few sounds in this world are more satisfying than the click-click-click of a mechanical keyboard. Built from the bottom up with spring-activated switches these high grade machines are the modern equivalent of the typewriter in the best possible way; they’re loud, they’re certain and they have a sliding scale of price points suitable for any budget or hobby. Whether you’re a newbie gamer looking to build your first set up or a veteran author in need of a new trusted companion, here’s a rundown of the best mechanical keyboards in the business.

What’s the Difference?

In general, there are two types of keyboards sold on the market today: membrane and mechanical. Membrane keyboards are the norm. Microsoft sells them. Logitech sells them. Pretty much every hardware company ever does! Any pre-built PC or laptop you buy is likely to come with one of these. Membrane keyboards work via sets of plastic membranes (hence the name) below each number, letter or key, with a dome-shaped switch that registers your touch. Touch a given key and a signal gets sent back to your computer – and there you have input.

A mechanical keyboard is quite different, however. It feels more like what you might be used to if you were an early PC or Mac computer adoptee. Remember those hulking, white and grey IBM models that clattered with every sentence? The audio and tactile feel of a mechanical keyboard is much more precise. There’s more feedback than simply your word document on the screen or your character’s action in a game. A mechanical keyboard, like a membrane version, also operates on switches. In this case, however, they’re physical switches rather than electric, and the result is, to many people, a much more nostalgic and satisfying experience that allows for better touch-typing and more feedback.

There are three main types of mechanical keyboard switches: linear, tactile and clicky. This defines how much travel there is as well as how loud they are. You may also have heard about red, blue, brown and other types of switches, but that’s usually just the manufacturer’s way to specify how the keys will feel and respond, as PC Gamer explains in an article.

Boards for Gamers

Just take a look at some of the top brand names for gamers; Xtrfy, Razer, Corsair, Logitech. Each of these companies have put their own spin on the mechanical keyboard design, streamlining the already simple tech and aiming it towards the gaming experience. In competitive, high paced games, the audible and tactile feedback of a mechanical keyboard can be invaluable when it comes to millisecond-decision-making. Designers know this and plan for this – so kit yourself out. Gear up, plug in, and get your budget ready.

The Xtrfy line of mechanical keyboards is narrow yet diverse, owned by eSports team Ninjas in Pyjamas. Their professional gamers have access to some of the best peripherals in the industry. Their teams travel the world and compete in every major game, armed with industry sponsors like bookmaker Betway and keyboards like the K2-RGB. Xtrfy keyboards are flashy. Xtrfy keyboards are precise. Available as cheap as €79 and as expensive as €189, their colourful light up displays can adorn the desk of both fans and pros alike without a fuss. Another example is hardware company Razer, sponsor of a whole host of teams and lineups around the world; they provide gear to three time League champion team SKT, to the 2017 winners Gen. G, to Overwatch team Immortals and more. Much like Xtrfy, their mechanical keyboards have their light up, glow in the dark gizmos. Razer offers something more unique however: a hybrid between membrane and mechanical designed to offer not only speed, but precision and a preferable typing experience to boot. The best of both worlds. Bear in mind that the newest opto-mechanical models can cost up to and beyond $200 with shipping. It’s true, mechanical keyboards are much more costly than membrane keyboards – but with peripheral gear, you get what you pay for.

Image credit: Pexels

Boards for Work

Pure mechanical might be best if you’re a hardcore gamer. Opto-Mechanical might suit a user who uses their PC for a variety of tasks. But what if you’re more of a casual homebody? Someone that doesn’t game, or who just uses their PC to type? You might try a CODE keyboard, which is simple but effective. You might try a HXSJ 2600 with ergonomic padding. There are so many models and so many options, sometimes the best thing to do is just get out and take a look. Go to a store. Tap away. See what feels best to you.

Mechanical keyboards are all about feel, after all.

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Here is how the Holographic Principle came into being from the Theory of Black Holes:

In 1974 Hawkins suggested an idea relating to black holes what is now as called “Hawking Radiation”. Okay so here’s what Hawking Radiation is in a Nutshell : When ‘something’ falls into a black hole and crosses its event horizon(i.e the point of no return) it eventually gets ripped apart by the blackhole when it reaches the singularity and is ‘predicted’ to be radiated in form of energy called Hawking Radiation. But as Gerard t’Hooft , Leonard Susskind , Herman Verlinde and others found out that there is something fundamentally wrong with that view since it violates a basic principle of physics that information cannot be lost permanently. If 2 different objects go into a blackhole and later on are radiated as energy by the blackhole then there is a loss of ‘information’ (from a physicist’s point of view) since those 2 ‘different’ things must stay ‘different'(as in distinguishable states) even if they get spaghetti-fied or scrambled i.e later on you would be able to figure out which 2 objects entered the blackhole. But as we know anything can go into a black hole and nothing can come out and at the same time information also cannot be lost.

So where is all information stored that goes inside a blackhole ? … as said by Susskind : thats actually a wrong question! The notion of where is information is actually observer dependent. To say it differently in a loose manner : The information somehow resides on the surface of a blackhole as viewed from outside of the horizon! Whats it says is that the information in the immediate vicinity of the blackhole is mapped onto its surface i.e the surface of the black a holographic projection of the things in its vicinity. And scientists later on found that this concept can be extended to our own universe which has given rise to the Holographic Principle. So It might just be the case that we are a projection of a holographic film!

The Discussion Video:

Well you need to have a look at the video to understand what it means like! The below video is from 2011 World Science Festival on discussion about the “Holographic Universe Principle”. The discussion panel includes some of the worlds Leading Physicists .. namely : Gerard t’Hooft , Leonard Susskind , Herman Verlined and Raphael Bousso with John Hockenberry as the host.

Official video link : A Thin Sheet of Reality: The Universe as a Hologram

More on Hawking radiation : http://en.wikipedia.org/wiki/Hawking_radiation

More on Holographic Principle : http://en.wikipedia.org/wiki/Holographic_principle

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