A Modem is one of the most fundamental networking devices. Without it, the internet connection from your telephone line or cable cannot reach your computer.
The first commercial modem was invented by AT&T Bell Labs in 1958 for transmitting data over telephone lines.
Modem = Modulator + Demodulator
A modem is a hardware device that:
Computers work with digital signals (binary 0s and 1s). But telephone lines and cable systems were originally designed for analog signals (continuous waves). A modem bridges this gap by converting between the two formats.
| Feature | Modem | Router |
|---|---|---|
| Function | Connects to internet | Distributes internet within home |
| Connection | ISP → Modem | Modem → Multiple devices |
| IP Address | Has public IP | Assigns private IPs |
Yes, for a home network. The modem connects your home to the internet (ISP). The router distributes that connection to multiple devices via Wi-Fi or Ethernet.
Armstrong Number – Program in Java and Python
Learn what an Armstrong number is and how to write programs to check for Armstrong numbers in Java and Python with complete code examples.
Top 10 Basic Computer Questions and Answers
Test your knowledge with these basic computer questions and answers. Learn about the CPU, RAM, hardware, and the father of the computer.
Binary Search Algorithm in C Programming
Learn how the Binary Search algorithm works in C programming. Understand the logic of dividing sorted arrays and get the complete C code example.
Binary Search Program in C (Algorithm & Code)
Learn how to write a Binary Search program in C. Understand the divide and conquer algorithm, time complexity, and see a fully working C code example.
What is the Full Form of BIT in Computer Science?
Learn the full form of BIT in computer science. Understand what a Binary Digit is, how it stores data as 0 or 1, and the difference between bits and bytes.
Turn this guide into revision flashcards, a practice exam, or an AI-generated podcast — free, no signup required.