Evgenij LegotskojAug. 9, 2015, 10:52 a.m.

Data Transmission TechnologiesDELL Networking. CLI (Command Line Interface)

EXEC Mode, CLI, DELL

For example, DELL PowerConnect 3524

You can control the device directly via the terminal port or via a Telnet connection. If access is via a Telnet connection, ensure that the device specific IP-address, which will be used by the workstation …

Evgenij LegotskojAug. 8, 2015, 3:49 a.m.

Data Transmission TechnologiesSDH - Synchronous Digital Hierarchy (Part 2)

GFP, PDH, LCAS, VCAT, Sonet, SDH-NG, SDH

Compensation of frequency synchronization error

The pointer can not only fulfill a fixed phase shift and mismatch clock multiplexer clocked device, from which the user data is received. To compensate for this effect, the index value is periodically incremented or …

Evgenij LegotskojAug. 7, 2015, 3:39 a.m.

Data Transmission TechnologiesSDH - Synchronous Digital Hierarchy (Part 1)

PDH, STM1, Терминальный мультиплексор, Sonet, Мультиплексор ввода-вывода, SDH

Specific technologies PDH deficiencies have been addressed and overcome technology developers synchronous optical networks (Synchronous Optical NET, SONET), the first version of the standard which appeared in 1984. It was then standardized Committee of T-1 ANSI Institute. As a result …

Evgenij LegotskojAug. 6, 2015, 3:28 a.m.

Data Transmission TechnologiesPDH - plesiochronous digital hierarchy

мультиплексор, T1, E1, PDH, бит-стаффинг

PDH technology was developed in the late 60s by AT & T to address the problem of large communication switches, telephone networks among themselves. Communication links the FDM, applied previously to solve this problem, have exhausted their opportunities in terms …

Evgenij LegotskojAug. 4, 2015, 3:08 a.m.

Data Transmission TechnologiesDWDM Technology

dwdm, усилители, CWDM, WDM, волс, HDWDM, мультиплексирование

The technology packed wavelength division multiplexing (Dense Wave Division Multiplexing, DWDM) is designed to create a new generation of optical backbones running at multi-terabit speeds and. Information in fiber-optic communication lines passed at the same time a large number of …

Evgenij LegotskojAug. 3, 2015, 8:30 p.m.

AVREEPROM in microcontrollers AVR Atmega

EEPROM, Atmega

Microcontrollers AVR Atmega48 / 88/168/328 contain the EEPROM memory of 256/512/512 / 1K bytes , respectively. EEPROM in AVR microcontrollers can support up to 100,000 write cycles. Access to non-volatile memory is carried out through three types of registers:

  • EEARH, …
Evgenij LegotskojAug. 3, 2015, 4:28 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 009. Passive Components FOL

волс, fiber, компоненты

Passive Components Fiber-optic communication lines are divided into the following types:

  • optic connectors and splitters;
  • optical converters;
  • optical isolators;
  • optical switches.

Splitters

The most important passive components are FOL optic connectors and splitters, which are used for consolidation or separation …

Evgenij LegotskojAug. 2, 2015, 4:18 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 008. Installation of optical couplers

fiber, волс, монтаж

Installation of couplings

Mounting of couplings shall be in accordance with installation instructions for the particular type of coupling of the manufacturer (supplier) couplings. Connection of optical fiber mounting couplings should be carried out under the control of the welding …

Evgenij LegotskojAug. 1, 2015, 4 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 007. Structure and classification of optical couplers

волс, конструкция, fiber

Introduction

Currently, the Russian market is widely featured products, both domestic and foreign manufacturers of optical couplings for installation of cables. Widely known and used clutch of such manufacturers as: Raychem (Belgium), Reichle & DeMassari (Switzerland), RXS / Simens (Germany), …

Evgenij LegotskojJuly 30, 2015, 8:06 p.m.

AndroidThe file on the Android OS. Read and write operations

write, file, Android, read

Read and write operations to file are standard functionality of any applications that are logging the events, work with files, up to the transfer of data over the network. In this article, we consider methods of recording information in the …

Evgenij LegotskojJuly 30, 2015, 2:49 a.m.

Data Transmission TechnologiesCircuit switching and packet data transmission networks

коммутация каналов, составной канал, коммутация пакетов, дейтаграммная передача, виртуальный канал, элементарный канал

Circuit switching and packet - it's methods for solving the generalized problem of switching data in any network technology. Complex technical solutions of the generalized switching tasks in its entirety consists of the particular problems of data transmission networks.

By …

Evgenij LegotskojJuly 29, 2015, 3:47 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 006. Installation of fiber-optic communication lines

fiber, волс, монтаж

Basic concepts and definitions

The most responsible operation in the process of construction of fiber-optic, predetermining the quality and range is the installation of optical fibers. Such a combination of fibers and installation cables are produced in the manufacturing process …

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YL

C++ - Test 001. The first program and data types

  • Result:66points,
  • Rating points-1
k
  • korsar
  • Nov. 23, 2022, 8:57 a.m.

C++ - Test 005. Structures and Classes

  • Result:50points,
  • Rating points-4
TM

C++ - Тест 003. Условия и циклы

  • Result:78points,
  • Rating points2
Last comments
b

GameDev on Qt - Tutorial 5. The explosion of bullets using sprite images

Если вдруг кто-то прочитает.... Скачал проект, скомпилил, запустил. Всё красиво и объектно ориентировано, но вот FPS дико страдает, когда появляется 10+ врагов. Может есть какие-то надстрой…
  • juvf
  • Nov. 25, 2022, 12:14 a.m.

Qt/C++ - Lesson 051. QMediaPlayer – simple audio player

Добрый день. Подскажите, как можно перехватить в Qt или Qml уровень воспроизводимого звука? Т.е. требуется сделать виртуальный винтажный индикатор (стрелочный или светодиодный), который бы …
  • juvf
  • Nov. 3, 2022, 3:20 a.m.

QML - Lesson 007. ListView. Dynamic creation and deletion of elements

Добрый день. Очень полезная статья. Спасибо. Вопрос такой: 1) нужно "взять" кнопку 2 пальцем (прикаснулись пальцем к кнопке 2, держим, через 2-3 кнопка оторвалась от ListView) и пере…

PyQt5 - Lesson 007. Works with QML QtQuick (Signals and slots)

А можно ли из QML сделать привязку свойства к свойству пайтоновского объекта? Ну, т.е. , например, у нашего объекта Calculator обхвялем свойства sumresult и subresult c с декоратором @pyqtProp…
MA

Python Image Recognition with TensorFlow and Keras

А что собственно выводит программа, как вывести то что она смогла распознать?
Now discuss on the forum
AB

Sorting the added QML elements in the ListModel

I am writing an alarm clock in QML, I am required to sort the alarms in ascending order (depending on the date or time (if there are several alarms on the same day). I've done the sorting …
AM

Как добавить в скрипт размер каждого файла в Мб ?

IDLE (Python 3.10 64-bit) Win 10 Есть такой скрипт: Поиск перечня файлов в папке и запись списка: import ospath = 'E:\Мой Python\__Видеокурсы Python'rez = sorted(os.listdir(pa…
n
  • nkly
  • Oct. 18, 2022, 9:14 a.m.

Как сохранить данные древовидной модели на основе QStandardItemModel в файл

Вы меня неправильно поняли. Допустим я собираю кулинарные рецепты и один из них - рецепт супа Харчо. Структура файла данных такова: { node:Рецепт супа Харчо parent:Вкусные блюда, …

Вопрос по Qt Creator

Добрый день. Не знаю, подобную проблему я не решал.

Задать другой класс div-у

Добрый день. Попробуйте использовать Selenium. Это библиотека есть в виде Python модуля и она позволяет загружать страницу и манипулировать html элементами. Как я понимаю, в ней можно…
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