Posted in Education, JRT Institute, Online Tricks, Programming

Computer Computations

Commonly operated machine particularly used for Trade, Education and Research is the simple definition of computer thought to me on my school days. Computers made our jobs easier to finish. We use it almost everywhere. We know that computers only understand binary numbers i.e., 0‘s and 1‘s. So, these computers are also called “Binary Computers”. Let us take a look on it and its further improvements.

Binary Computers

A binary code represents text, computer processor instructions, or other data using any two-symbol system, but often the binary number system‘s 0 and 1. The binary code assigns a pattern of binary digits (bits) to each character, instruction.

binary

The American Standard Code for Information Interchange (ASCII),uses a 7-bit binary code to represent text and other characters within computers, communications equipment, and other devices. Each letter or symbol is assigned a number from 0 to 127.

7 bit ascii.PNG

Advantages

  • This can be easily represented by electronic devices and for which calculation can be carried out using reasonably simple active electronics.
  • Binary data is also reasonable simple to store – again only needing a two state storage (on/off – 1/0).

Disadvantages

  • Difficult to read.
  • takes a lot of digits to represent any reasonable number.
  • rounding off numbers is the main problem.

Ternary Computers

ternary computer (also called trinary computer) is a computer that uses ternary logic (three possible values) instead of the more common binary logic (two possible values) in its calculations.

ternary

Ternary computing is commonly implemented in terms of balanced ternary, which uses the three digits −1, 0, and +1. The negative value of any balanced ternary digit can be obtained by replacing every + with a − and vice versa. It is easy to subtract a number by inverting the + and − digits and then using normal addition. Balanced ternary can express negative values as easily as positive ones, without the need for a leading negative sign as with decimal numbers. These advantages make some calculations more efficient in ternary than binary. Considering that digit signs are mandatory, and non zero digits are magnitude 1 only, notation using only zero and signs alone is more concise than when 1’s are used.

images (11)

With the advent of mass-produced binary components for computers, ternary computers have diminished in significance. The Josephson junction has been proposed as a balanced ternary memory cell, using circulating superconducting currents, either clockwise, counterclockwise, or off. The advantages of the proposed memory circuit are capability of high speed computation, low power consumption and very simple construction with fewer elements due to the ternary operation. In 2009, a quantum computer was proposed which uses a quantum ternary state, a qutrit, rather than the typical qubit. When the number of basic states of quantum element is d, it is called qudit.

qubit

Advantages

  • The advantages of using ternary logic is to do our computing would be that we can hold the same amount of information in less memory, and we can process more information at once.

Disadvantages

  • Ternary computing relies on three-state “trits” rather than two-state bits.

Quaternary Computers

Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number. Four is the largest number within the subitizing range and one of two numbers that is both a square and a highly composite number (the other being 36), making quaternary a convenient choice for a base at this scale. Despite being twice as large, its radix economy is equal to that of binary. However, it fares no better in the localization of prime numbers.

quaternary

Quantum computers are still binary – “quantum binary”, they can have arbitrary superpositions of 0 and 1. 0 and 1 are special cases of a superposition.

 

Catch our blog with more ideas and programming tricks. You can see them in our categories list. Catch some of the cheat sheets of programming languages like Python, Java, MySql and some other cools tricks.

From,

Maria Irudaya Regilan J

Posted in Education, Online Tricks

Run Commands Every Windows User Should Know

Article by, Vicky Singh Rao

There are several ways to efficiently access the files, folders, and programs in Windows operating system. We can create shortcuts, pin programs to the taskbar, Start menu shortcuts etc. but we can’t do it for all programs in many cases. However, the Windows Run Command box is one of the most efficient ways of accessing system programs, folders, and settings.

How to open Windows Run command box?

You need to press Win+R (Hold Windows button then Press R)

Important Run Commands Every Windows User Should Know

%temp%

This is the fastest way to clear the temporary files from your computer. It can save a lot of space which was being wasted by temporary files.

cmd

This command will open the windows DOS command prompt. Windows command prompt is very useful for performing many tasks which are not possible using graphical user interface.

MSConfig

Windows Run Command - MSconfig-compressed
Windows System Configuration

This command will open Windows System Configuration where you can edit different things like the boot options, startup options, services, etc.

sysdm.cpl

Windows Run Command - sysdm cpl-compressed
System Properties window

This command will open the System Properties window, Where you can change the system protection and performance related many settings

Powershell

Powershell is very similar the command prompt. Just type this command in the Run dialog box, and you will have your PowerShell opened without administrator privileges.

perfmon.msc

Windows Run Command - perfmon msc-compressed
Windows System Performance monitor

This command can be used to monitor the performance of your computer. There are plenty of options for monitoring the system performance

regedit

Regedit Run command is used to open the Windows Registry. It is a hierarchical database that hosts all the configurations and settings of Windows operating system, it’s users and the installed software.

\ (Backslash)

This is one of the lesser known Run commands. Just enter the backslash into the Run dialog box and it will open up the C drive. It is one of the quickest ways to access the C drive.

. (Dot)

This is yet another lesser known Run command. When executed, it opens the current user’s home folder which hosts all the other local folders like the Downloads, Documents, Desktop, Pictures, etc.

.. (Double Dots)

When you execute these two dots in the Run dialog box, it will open up the Users folder which is located directly on the C drive.

Control

This command will open the control panel. Control panel is used for managing all the system settings and programs

hdwwiz.cpl

Windows Run Command - hdwwiz-
Windows Device Manager

This command is used to open the Device Manager in Windows. You can manage all the device connected internally or externally to your PC.

Notepad

The quickest way to open notepad in Windows. Just type this command in Run Box and hit enter.

osk

This command will open On-Screen Keyboard on your display monitor. You can easily touch and type or use your mouse for typing.

taskmgr

This command will open task manager where you can manage all the processes and programs running on Windows Operating system.
Also take a look at some of the other topics like downloading you tube videos without softwareDownload A Website For OfflineTricks on Internet and also some other interesting areas in your favourite programming languages. Take a look at my blog.
From,
Maria Irudaya Regilan J
Posted in Education, Online Tricks

How To Download A Website For Offline

Author, Vijay Prabhu

Our life is now centered around Internet and data connection. Without the Internet connection, we can not use our smartphones or laptops to their optimum potential. This is true when sometimes we need to access very important web pages but can’t due to Internet issues. It is for such kind of situations we are sharing a new and useful trick so that you can access websites even when you don’t have Internet access. The trick involves downloading the full website data and can browse the website at your own sweet time.

#1 Using HTTrack

HTTrack allows you to download any website for offline use and is very easy to use.  Follow the below steps to use HTTrack to download any website and browse it at your own sweet time.

Step 1. Download and install the software HTTrack from here.

Step 2. Launch the software, and it will ask you to enter the project name, project category and the default path to save the websites you download.How To Download A Complete Website To Browse Offline Without Internet

Step 3. Enter the relevant details and just click on next, Now in the text box you have to enter the URL of the site which you want to download, just paste the complete URL of the site and click on next. We are using Wikipedia as an example.How To Download A Complete Website To Browse Offline Without Internet

Step 4. HTTrack will now download the entire Wikipedia website for your offline browsing. The download process can take time, based on your internet speed and size of the website you are downloading. In our case, Wikipedia is huge so it took some time.How To Download A Complete Website To Browse Offline Without Internet

Now after download process is complete, just browse to the saved path, and there you will find your website file  that you can now browse at your own time without worrying about Internet connection.

#2 Using GetLeft

Getleft is another tool which allows you to download websites and browse them later. Like HTTrack it downloads complete website according to the options set by the user. Getleft also has a very simple UI which any noob can also use. Follow the process below to use Getleft.

Step 1. Download Getleft and open the software, press CTRL+U which will ask you to enter the URL and directory.

How To Download A Complete Website To Browse Offline Without Internet

Step 2. Now you will be asked to select the files that you want to download.

How To Download A Complete Website To Browse Offline Without Internet

Step 3. Now wait for few minutes until the files being pulled to your system.

How To Download A Complete Website To Browse Offline Without Internet

That’s it now you can browse your saved website in offline mode.

How To Download A Complete Website To Browse Offline Without Internet

#3 Using Cyotek

Cyotek WebCopy is another free tool that lets you a full or partial website locally for offline browsing. WebCopy will scan the specified website and download it’s content onto your hard disk. Links to resources such as stylesheets, images, and other pages in the website will automatically be remapped to match the local path. Using its extensive configuration, you can define which part of a website will be copied and how.

Download and install the App using the hyperlink above. Open the App and hit the “F5” Key. In the window given below enter the name of the website and the destination folder.

How To Download A Complete Website To Browse Offline Without Internet

Now you have to wait until the download process finishes.

How To Download A Complete Website To Browse Offline Without Internet

Once downloaded, you can open the file in your browser and access your saved website.

#4 Offline Downloader

Like above tools, Offline Downloader is also an offline website browsing tool but with a difference. It downloads and shows websites exactly the way you want them, including or excluding any parts you need or don’t need (such as directory, domain and file names, types of files, their size or any other properties).

How To Download A Complete Website To Browse Offline Without Internet

You just need to download and install the software offline downloader from here. Open the software and enter the URL as shown on the image and then select the file type you need to download and hit the download button. Enjoy the downloaded file at your own time and leisure.

#5 Web2Disk

How To Download A Complete Website To Browse Offline Without Internet

Web2Disk’s powerful engine allows it to modify websites as they’re downloaded so that all the links work directly from your hard drive. You’ll be able to browse the site as if it were still online. However, the main feature of Web2Disk is its ability to show you downloaded websites in any browser you choose.

You just need to enter the URL in ‘Root URL’ and then browse the location to save the entire website and then hit the ‘Go’ button.

If you have unstable Internet connection or slow data connection, use any of the five tools given above and enjoy your favourite websites even when you dont have Internet access.

Check out my blog for other cool stuffs and some other online tricks like downloading youtube videos without any software.

From,

Maria Irudaya Regilan J

Posted in Online Tricks

Tricks on Internet that are unknown

Top 5 Simple and useful Internet tricks for you

There are some simple keyboard shortcuts which one can use while using Internet and it would help the user to avoid typing a lot and also at certain places the mouse can be completely avoided by these tricks.

Entering a new website: Normally users would have to type http:// or www before they want to enter a new website however now just type the name of the website and press . By default this will add “http://www.” in front and “.com” towards the end of the website.

Choosing from multiple options: Most of the times while filling the information online, the form displays huge data from which user needs to choose the right information. For example: Most of the times the data would require user to fill the details of the country that they belong to and this is a vast data, now user can just type out the initial alphabet of their country and then the search would be restricted to the list of names starting with the alphabet that they typed. This procedure is very useful when someone has to choose from vast data and is applicable to similar situations.

Using Tabs for smooth browsing: Here again we will discuss certain shortcut keys with the help of which users can surf the internet browser in much better way.
Suppose user needs to open a new Tab then use ctrl + T
For closing any open Tab press ctrl + W
Suppose user has closed some tab and now wants to reopen it then just press ctrl + shift + T user can open the last window that was closed.
Press “F11″ key to get full screen view of the Internet browser. Re press F11 key to resume the normal view.
Hold the ctrl and press “+” or “-” this will increase or decrease the size of the text respectively.

Improvised Search: Most of the times when user is searching for something and uses two or more words then the search engine gives a mixture of result because it considers the two words individually for its search. For eg: In case of :School help, the search will consider ‘School’ and ‘help’ as two words and give results accordingly, instead if user types “School help” in quotes then this helps the search engine to search the correct information. So by using quotes user can improvise their searches.

Pause the video: While viewing the YouTube videos the easiest way to pause it by clicking the “K” key and to resume the video users would just need to press the same key (“K”)again.

From,

Maria Irudaya Regilan J

Posted in Online Tricks

Youtube Videos Download

Ever heard of downloading You Tube videos?.. Yes?.. Then I have nothing to say more 😦 But, have your ever heard of downloading You Tube videos without a software or an application. Yeah, you can do it.

Steps for downloading mp3 and mp4 online

  1. Go to the link either on your desktop or mobile ‘m.youtube.com
  2. You will get the You Tube website.
  3. Surf your video and select it to view.
  4. Go to the address bar on the above and replace the word ‘youtube‘ as ‘10youtube‘ or ‘ssyoutube‘. You will be directed to another website where you can download the video in any format or in any resolution.
  5. If you wanna download mp3 of your you tube video, replace the word ‘youtube‘ in the address bar as ‘youtubegg‘. You will be directed to another website where you can download mp3 of your video.

for example: if you have link on address bar as https:www.youtube.com/watch?v=EGqnXQyjhxE , then replace the host name youtube as I said before. Then the link will be as https://www.10youtube.com/watch?v=EGqnXQyjhxE or https://www.ssyoutube.com/watch?v=EGqnXQyjhxE.

Have fun on downloading videos. Comment your experience on this post.

From,

Maria Irudaya Regilan J

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