Knowledge in (Tele)Communications
Digital Electronics study notes
These are the study notes of digital electronics.
Sayan Ghosh
Electronics
Telecommunication technologies may primarily be divided into wired and wireless methods. Overall though, a basic telecommunication system consists of three main parts that are always present in some form or another: A transmitter that takes information and converts it to a signal. A transmission medium also called the physical channel that carries the signal. An example of this is the "free space channel". A receiver that takes the signal from the channel and converts it back into usable information for the recipient. For example, in a radio broadcasting station, the station's large power amplifier is the transmitter; and the broadcasting antenna is the interface between the power amplifier and the "free space channel". The free space channel is the transmission medium, and the receiver's antenna is the interface between the free space channel and the receiver. Next, the radio receiver is the destination of the radio signal, and this is where it is converted from electricity to sound for people to listen to. Sometimes, telecommunication systems are "duplex" (two-way systems) with a single box of electronics working as both the transmitter and a receiver, or a transceiver. For example, a cellular telephone is a transceiver.[36] The transmission electronics and the receiver electronics within a transceiver are actually quite independent of each other. This can be readily explained by the fact that radio transmitters contain power amplifiers that operate with electrical powers measured in watts or kilowatts, but radio receivers deal with radio powers that are measured in the microwatts or nanowatts. Hence, transceivers have to be carefully designed and built to isolate their high-power circuitry and their low-power circuitry from each other, as to not cause interference. Telecommunication over fixed lines is called point-to-point communication because it is between one transmitter and one receiver. Telecommunication through radio broadcasts is called broadcast communication because it is between one powerful transmitter and numerous low-power but sensitive radio receivers.[36] Telecommunications in which multiple transmitters and multiple receivers have been designed to cooperate and to share the same physical channel are called multiplex systems. The sharing of physical channels using multiplexing often gives very large reductions in costs. Multiplexed systems are laid out in telecommunication networks, and the multiplexed signals are switched at nodes through to the correct destination terminal receiver.
Lakshay Singh
DIGITAL DESIGN IMPORTANT PROBLEMS(set1)
this pdf contain minimize SOP and POS form problem. implementation problems. this is helpful for gate and ece branch.
ankit kumar
SENSORS
This ppt deals with the sensors the developing area in todays world . It contains the details about the different types of sensors. How the sensors are made? Different types of sensors? Working principle of sensors? By reading this article you will be able to get all the basic information about the sensors.
Katkam Ashutosh
INTRODUCTION TO ARDUINO
This ppt deals with the introduction to arduino. It is written by a student community for the better understanding of the students. It gives information about the arduino and its parts. Basics of arduino. Parts of arduino Coding a arduino. Types of arduino.
BASICS OF ELECTRONICS
The ppt is the complete information about the basics of electronics needed for every engineering student. It deals from the basic to little advanced . It deals about resistors ,capacitors, inductors,potentiometers,microprocessors , microcontrollers, and many more. It is prepared by technical advisory board of trc-snist. It is prepared to make students to understand better.
Electronics and communication engineering syllabus
This article contain total complete syllabus of electronics and communication engineering of 1st year and it is completely approved by AICTE .
Course file 2-1 ECE
This is the course file of electronics and communication engineering students of 2nd year 2nd sem contains all the course details important questions in it.
Signals and systems (1,2,3)
Signals and sytem ppts on tge unit 1 ,2 and 3 by Dr.k.venkat reddy . It contains full information on the introduction of signals and systems and many more applications of it.
Switching theory and logic design -Part 4
This is the part 4 of the STLD subject of electronics and communication engineering students. This lecture ppts are prepared by V.Kumara swamy sir who has a great exin this subject in last 25 years.
Yashwanth Kumar
Semiconductor Devices
Semiconductor material are very much usefull in todays generation so we need to learn about the semiconductor devices . The present article deals with the semiconductor devices. This article is prepared by experienced faculty for the better understanding of the students.
Nobi ecm