Evgenii Legotckoi
Evgenii LegotckoiJuly 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 …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 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 …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 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 …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 28, 2015, 2:56 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 005. Fiber-optic cables. Classification

ВОК, волс, fiber

Classification of fiber optic cables

Fiber-optic cables (FOC) - a cable products, containing a number of optical fibers and the reinforcing member enclosed in a common envelope, on top of which, depending on the operating conditions of the protective cover …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 27, 2015, 2:32 a.m.

Data Transmission TechnologiesСampus network

Кампусные сети, корпоративная сеть, сеть отдела, сеть предприятия, сеть рабочей группы

Introduction

Corporate Network - a network whose primary purpose is to maintain the operation of a particular enterprise that owns this network. Corporate network users are the only employees of the company.

In contrast to the prodier networks, enterprise networks, …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 27, 2015, 2:21 a.m.

Data Transmission TechnologiesStandardize Data Transfer Technology

Стандартизация, ЛВС, ШПД

Standardization and sources of standards

Universal argument about the benefits of standardization, which is valid for all industries, computer networks is of particular importance. The essence of the network - the connection of various equipment, and therefore there is a …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 26, 2015, 9:12 a.m.

AndroidToast - Customization pop-up message on the Android

Android, Toast

Give customization of all applications under OS Android !!!

With the slogan I want to tell today about customization pop-up message (Toast) in the Android OS. In any application that is designed and developed with great care, the question may …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 21, 2015, 8:55 a.m.

AndroidAndroid. Customization ListView

ListView, ListAdapter, Android

Customization ListView is common in developing applications for Android OS. ListView (List) allows you to display the same type of information in your application, for example, show the products with prices and features, if you develop applications for online sales. …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 20, 2015, 1:57 a.m.

Data Transmission TechnologiesTopology data networks

иерархическая звезда, кольцевая топология, топология ЛВС, полносвязная топология, ячеистая топология

Under the topology of the network refers to the configuration of the graph, whose vertices correspond to the end nodes of the network (such as computers) and communications equipment (eg, routers), and the edges of the physical or informational communication …

Read
Evgenii Legotckoi
Evgenii LegotckoiJuly 20, 2015, 1:38 a.m.

Data Transmission TechnologiesArchitecture of data transmission networks

network, transmission

Decomposition of the tasks of networking

Network architecture - a view of the network as a system of interrelated elements, each of which is assigned a specific private function.

In addition, each of the network elements solves a common problem. …

Read
Evgenii Legotckoi
Evgenii LegotckoiJune 29, 2015, 2:47 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 004. Dispersion in the optical fiber

fiber, волс, модовая дисперсия

Distinguish mode dispersion, which is caused by a large number of modes in the optical fiber and the chromatic dispersion associated with the incoherence of light sources actually operating in a certain range of wavelengths.

Consider the propagation of the …

Read
Evgenii Legotckoi
Evgenii LegotckoiJune 29, 2015, 2:36 a.m.

Fiber Optic Transmission LinesFOTL - Tutorial 003. The attenuation in the optical fiber

fiber, волс, потери

The most important parameters are the optical fiber loss and attenuation of the transmitted energy. These parameters define the range of the FOC and on its effectiveness. Attenuation in optical fibers due to manifestation of the following losses:

α c …

Read
Last comments
k
kmssrFeb. 8, 2024, 5:43 p.m.
Qt Linux - Lesson 001. Autorun Qt application under Linux как сделать автозапуск для флэтпака, который не даёт создавать файлы в ~/.config - вот это вопрос ))
Qt WinAPI - Lesson 007. Working with ICMP Ping in Qt Без строки #include <QRegularExpressionValidator> в заголовочном файле не работает валидатор.
EVA
EVADec. 25, 2023, 9:30 a.m.
Boost - static linking in CMake project under Windows Ошибка LNK1104 часто возникает, когда компоновщик не может найти или открыть файл библиотеки. В вашем случае, это файл libboost_locale-vc142-mt-gd-x64-1_74.lib из библиотеки Boost для C+…
J
JonnyJoDec. 25, 2023, 7:38 a.m.
Boost - static linking in CMake project under Windows Сделал всё по-как у вас, но выдаёт ошибку [build] LINK : fatal error LNK1104: не удается открыть файл "libboost_locale-vc142-mt-gd-x64-1_74.lib" Хоть убей, не могу понять в чём дел…
G
GvozdikDec. 18, 2023, 8:01 p.m.
Qt/C++ - Lesson 056. Connecting the Boost library in Qt for MinGW and MSVC compilers Для решения твой проблемы добавь в файл .pro строчку "LIBS += -lws2_32" она решит проблему , лично мне помогло.
Now discuss on the forum
AC
Alexandru CodreanuJan. 19, 2024, 10:57 a.m.
QML Обнулить значения SpinBox Доброго времени суток, не могу разобраться с обнулением значение SpinBox находящего в делегате. import QtQuickimport QtQuick.ControlsWindow { width: 640 height: 480 visible: tr…
BlinCT
BlinCTDec. 27, 2023, 7:57 a.m.
Растягивать Image на парент по высоте Ну и само собою дял включения scrollbar надо чтобы был Flickable. Так что выходит как то так Flickable{ id: root anchors.fill: parent clip: true property url linkFile p…
Дмитрий
ДмитрийJan. 10, 2024, 3:18 a.m.
Qt Creator загружает всю оперативную память Проблема решена. Удалось разобраться с помощью утилиты strace. Запустил ее: strace ./qtcreator Начал выводиться весь лог работы креатора. В один момент он начал считывать фай…
Evgenii Legotckoi
Evgenii LegotckoiDec. 12, 2023, 5:48 a.m.
Побуквенное сравнение двух строк Добрый день. Там случайно не высылается этот сигнал textChanged ещё и при форматировани текста? Если решиать в лоб, то можно просто отключать сигнал/слотовое соединение внутри слота и …

Follow us in social networks