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 ISDN? ISDN here is primarily a form of digital telephone network. It is generally used for digital transmission of data and voice. This means that there is a telephone based system here and it also provides internet service to the user. ISDN can be specifically called a circuit switched telephone network system. This … Read more
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? 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