• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
ITE PC v4.0 Chapter 1 - Система е
ITE PC v4.0 Chapter 1 - Система е

... Role of the Transport Layer The Transport Layer is responsible for establishing a temporary communication session between two applications and delivering data between them. TCP/IP uses two protocols to achieve this:  Transmission Control Protocol (TCP)  User Datagram Protocol (UDP) Primary Respons ...
CHANNEL VISION
CHANNEL VISION

... also cause this reading. This is normal, so nothing needs to be fixed. ...
NextEDGE FrameSaver Network Access Module (NAM) Installation
NextEDGE FrameSaver Network Access Module (NAM) Installation

... 2. Configure each interface according to the local management interface (LMI ) and assigned line conditions supplied by the service provider. 3. Save the configurations. ...
Chapter 4
Chapter 4

... represented electrically by voltage patterns on wires and in electronic devices. The data represented by these voltage patterns can be converted to light waves or radio waves, and then back to voltage waves. Consider the example of an analog telephone. The sound waves of the caller’s voice enter a m ...
V-9923B CODE CALL UNIT
V-9923B CODE CALL UNIT

... standard color code order on a row of the connecting block. Verify all connections before ...
ShoreGear-90BRI Installation Guide
ShoreGear-90BRI Installation Guide

... The power LED flashes momentarily, and remains lit. • If the LED is not lit, make sure the power cord is plugged into the switch and the power source. • If the LED continues flashing, there is an internal error. Unplug the switch to power it off, then power it back on. Refer to the “Configuring Swit ...
Engineering Skills - Electrical Electronic Part 2hot!
Engineering Skills - Electrical Electronic Part 2hot!

... A good continuity test shows that the conductors are not broken and that all the connections are at least reasonable. However, a continuity test, although useful, is not enough to show that the circuit is totally safe so it would usually be used with other tests. ...
Electrical Panel
Electrical Panel

... Understanding HUD’s UPCS Protocol for Inspecting Electrical Devices Revised Oct. 2010 Unsecured cover – when opened this disconnect is ...
How cables and connectors impact measurement - Techni-Tool
How cables and connectors impact measurement - Techni-Tool

... connections, the thermal voltages will be equal and opposite, thereby canceling each other. If this is the case, then there is no contribution to error. Most often the temperatures at each binding post are identical, because they are very close together. But, if the calibrator’s binding posts are at ...
Morse structure of first
Morse structure of first

... can perform the standard classification of the critical points, introducing the index g j of the critical point j as the number of negative eigenvalues of H at j. The index of a critical point is the dimension of the largest subspace of the tangent space to the manifold at j on which the Hessian is ...
Tuesday - James K Beard
Tuesday - James K Beard

... Slide 10 ...
Universal sample compartment A8110 Overview Features
Universal sample compartment A8110 Overview Features

... ● Organic chemistry samples (solution and film) holder A8114 • Sample holder • 10 mm square cell holder • Film holder • Pseudo holder ...
BER Analysis Under Fading
BER Analysis Under Fading

...  Autocorrelation of n(t) (and also the inphase and quadrature-phase components of n(t)) ...
Irrigation Troubleshooting
Irrigation Troubleshooting

... calls with an irrigation problem, what do you do? ...
E-2WIRE Analog Class A/B Two-Wire Module Installation Sheet
E-2WIRE Analog Class A/B Two-Wire Module Installation Sheet

... mix normally open contact initiating devices with two-wire conventional smoke detectors. ...
Point-to-Point Communication
Point-to-Point Communication

... There is noise (random energy) in the wire that adds to the signal The average noise level is called the noise floor Noise is random. Occasionally, there will be large noise spikes Noise spikes as large as the signal cause errors You want to keep the signal-to-noise ratio high ...
E-100-L-A - Pentair Thermal Management
E-100-L-A - Pentair Thermal Management

... voltage at the end of the circuit. It is designed for use with Raychem BTVCR, BTV-CT, QTVR-CT, XTV-CT, KTV-CT, and VPL-CT industrial parallel heating cables. Once installed, the end seal is easily re-entered for maintenance and the heating cable can be accessed without removing the end seal. The LED ...
SS-201-120 & SS-201-240 v3.0 “SOFT START” MODULE INSTALLATION INSTRUCTIONS
SS-201-120 & SS-201-240 v3.0 “SOFT START” MODULE INSTALLATION INSTRUCTIONS

... To start the installation, read these instructions very carefully. Unplug the amplifier and remove any input, output and control cables that may be connected to the back of the amplifier. Remove the chassis from the case and remove the perforated sheet metal RF shield from the top of the chassis. Re ...
Chapter 1 : Introduction to Electronic Communications
Chapter 1 : Introduction to Electronic Communications

... when Z0 = ZL, all the incident power is absorbed by the load. This is called a matched line. when Z0 ≠ ZL, some of the incident power is absorbed by the load and some is returned (reflected) to the source. This is called an unmatched or mismatched line. with a mismatched line, there are 2 electromag ...
Chapter 1 : Introduction to Electronic Communications
Chapter 1 : Introduction to Electronic Communications

... when Z0 = ZL, all the incident power is absorbed by the load. This is called a matched line. when Z0 ≠ ZL, some of the incident power is absorbed by the load and some is returned (reflected) to the source. This is called an unmatched or mismatched line. with a mismatched line, there are 2 electromag ...
Tunneled InTerneT GaTeway
Tunneled InTerneT GaTeway

... changes in the form of a parallel network with dedicated access points (APs) for guest use or cellular antennas installed within the facility for 3G/4G connectivity to the cellular network. Both options are costly, time-consuming and require ongoing maintenance. Aruba Networks® offers an alternative ...
Overview Government Requirements for the United Kingdom
Overview Government Requirements for the United Kingdom

... Receive-to-Transmit Loss (RTL) The RTL measurement provides an indication of the signal attenuation between the receive pair and transmit pair of a four-wire circuit. The RTL number for the 3900 Series modems is 75. The sum of the RTL numbers of terminal apparatus at opposite ends of a particular po ...
PDF
PDF

... next to each other for long parallel runs ƒ Reroute signals which will be quiet during switching inbetween simultaneous switching signals ƒ Route signals close to power rails to provide capacitance ballast ƒ Tough problem to solve – moving one wire can introduce new problems ...
Designing a PXI Instrument for Testing & Simulation of Avionics
Designing a PXI Instrument for Testing & Simulation of Avionics

... ecosystem  of  tools  and  equipment.    Additionally,  because  this  technology  is  so  commonly  used  also   outside  of  aerospace  and  avionics,  there  are  a  wealth  of  human  resources  and  expertise  available  with   knowl ...
Wires - Massachusetts Institute of Technology
Wires - Massachusetts Institute of Technology

... next to each other for long parallel runs  Reroute signals which will be quiet during switching inbetween simultaneous switching signals  Route signals close to power rails to provide capacitance ballast  Tough problem to solve – moving one wire can introduce new problems ...
< 1 ... 3 4 5 6 7 8 9 10 11 ... 21 >

History of telecommunication



The history of telecommunication began with the use of smoke signals and drums in Africa, the Americas and parts of Asia. In the 1790s, the first fixed semaphore systems emerged in Europe; however it was not until the 1830s that electrical telecommunication systems started to appear. This article details the history of telecommunication and the individuals who helped make telecommunication systems what they are today. The history of telecommunication is an important part of the larger history of communication.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report