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Showing posts from October, 2017

Basic uses of Computers

1. In Homes - There are many uses at home like -
* Homework for students -Documents creation , ppt making,  Internet for school work.
* Entertainment - In music,  videos,  games , live streaming videos etc .
* Social Media - like Facebook,  Twitter, Instagram,  Google + to connect to more people .
* To download necessary documents and files .
2. In Businesses - Computer creates Automation,  that increases overall efficiency and performance of any business.  There are many of the businesses sectors , use computers as the root unit. 
Some main business sectors for computer uses are -
* IT Sector
* Teleservicing Companies
* Software and Web Industry
* Stock Market
* Marketing
* Advertising
* Management
3. In Education - Education,  now a days is using the newer updated technologies . To see this scenario, let we take some real time examples like -
* Smart classes in schools and colleges.
* Online Quality Education by universities
* Online Digital Library
* Useful in Research …

Monitor of a computer

To display the soft copy of output in a computer, we use monitor . It is an output device. It is just a a knowledge based article because it is all about the CRT and Flat Panel monitor description .

You purchase the computer , Television , Video games from the market but have you provided your attention towards the monitor of these devices .

Quality of the monitors , HD , High Hd , low resolution screen , High Resolution screen , different pixels size of monitor , all the talks depend about , which monitor are you using . This article may be boring for some tech geeks but has good content for descriptive geeks .

Basically two types of Monitors , i know aboout -

1. CRT Moniter ( cathode ray tube)  -
This monitor is a traditional form of monitors like our Television having a long cover back side . CRT monitor contains a big cathode ray tube that creates pictures on screen by using a electron beam .
Monitor size is to be calculated in inch diagonally .

Resolution is measured in pixels.

Some Useful Peripheral Devices for computers

This is the article about a list of very basic useful small devices we and you use with computer devices . These are the devices we use often , working in offices , at home , at the business places , while gaming , while using the other facilities , not available in the root device .

We all know that working with just a single computer or laptop without using the peripheral devices , is a trouble situation .

When we connect two computers wirelessly , it's Okay ,but what to do if Wireless connection not supports . We need definitely a LAN Cable .

To scan the QR code , what we need . Definitely a QR scanner , otherwise we would go to stop our work .

Now a days , most of the peripheral devices are replaced by the highly efficient and capacitive softwares but even after the softwares and wirelless world , we can not ignore the traditional peripheral devices .

These devices are evergreen in the hardware world and most of may be replaced by modern technolgies , but always even after th…

Ports available in my HP Laptop

Here are some ports list available in my HP laptop and almost all the computers and laptops have these common very useful ports to connect to peripheral device. 

These are the ports of Hp pavilion Notebook laptop with the Dual core processor ( A bit slow but its okay for Non-Gamers 😉) , 4GB RAM , 500 GB Hard Disk and not supportable to wireless / Wifi ( wifi interface not available 😃 ) .

Theese ports are -

1. Power Supply - To supply electricity to computer / laptop. Power supplying charger has a AC Adapter to convert high voltage AC into required DC voltage.



2. USB Port - To connect mostly peripheral devices like external hard disk,  pen drives , mobile phones  , embedded systems for debugging,  we use USB Ports. 



3. Ethernet / LAN Port - To use enternet using LAN cable or to connect two or more computers by lan cable. I used just 2-3 times in the last year .



4. Earphone Port - we use earphone port to listen music / entertainment purpose .
Mostly a great gift for the music lov…

What is Cryptography and encryption

Crytography is a technology to encrypt data.  We see in the computer systems,  encryption is the root key of security scenario. 

Encryption can be also said,  " hiding of data " .

Cryptography depends basically on two types of keys public key and private key encryption.
Public and private keys are like passwords.  The keys can be  attached directly with the files publicly or can be asked individually. 

In older times,  cryptography was also used by leonardo da vinci to write the book in the mirror image,  that was possible to read with a mirror as the key .

In defence services,  government organisations and other security services mostly use the encryption in transferring the important files with security issues. They also transfer the files by attaching other files . 

To understand encryption easily in real life,  we can take the below example -
If a person wants to write the words
" Hello"
But he writes -
H +2 -> J
E+2 -> G
L+2 -> N
L+2 -> N
O+2 …

How can we connect a Printer to Computer

We can connect any printer to a computer by following just below written simple steps -

1.   Plug in the printer in power socket.
2.   Turn on the printer.
3.   Turn on the Computer .
4.   Connect the printer to the computer / laptop using USB cable.
5.    Printer drivers installation process starts on computer or install by the CD came with printer.
6.    Go to control panel --Devices and printer
                                                     |
                                            Click on " Add the device / printer "
                                                     |
                                             Select Printer
                                                     |
                                              Click on Add This
7 .       Done ! ! !