What is PSTN? and how does it works .

What is PSTN?  PSTN is a very ancient and major form of telecom network system.  Mainly it is used for transmitting voice.  Copper cable is very important in this because the voice is carried here only with the help of copper cable.  If seen this way, it can be considered a simple telephone system.  In … Read more

What is UPS? and its types :

What is UPS?  UPS is mainly known for battery backup.  There is a battery present inside it and the work of that battery starts when there is a sudden electricity failure.  Friends, today almost everyone uses computers.  You know that computers require electricity.  When the electricity goes off, our computer suddenly turns off and so … Read more

What is PDF file?,How to create a PDF file :

What is PDF file?  The full form of PDF is Portable Document Format.  PDF is a file format developed by Adobe Company with the help of which a document can be transferred from one platform to another by placing elements like hyperlink, document, form etc.  PDF documents can be opened and edited by various software. … Read more

What is computer memory?

What is computer memory?  register memory :  Register memory is the smallest and fastest memory in the computer.  It is not part of the main memory and is located in the CPU in the form of registers, which are the smallest elements that hold data.  A register temporarily holds frequently used data, instructions and memory … Read more