Something about parallel interfaces.
This is about paralllel port (db25) comnector.
Introduction
Hi there, I was searching the web for a way to allow me to control electrical appliances using PC and I found it here. here is a circuit (figure 1) for using the printer port of a PC, for control application using software and some interface hardware. the interface circuit along with the given software can be used with the printer port of any PC for contr
RS-232C interface definition (DB9) PIN definition symbols 1 Carrier Detection DCD (data carrier detect) 2 receive data rxd (received data) 3 send data txd (transmit data) 4 data terminal prepare DTR (Data Terminal ready) 5 signal SG (signal ground) 6 data prepare DSR (data set ready) 7 request to send RTS (request to send) 8. Clear send CTS (clear to send) 9. The ring indicator prompt is Ri (ring indicator)1. description of common signal ports of DB9 and db2
Ethernet (Ethernet) Ethernet Ethernet (Ethernet) is a computer LAN networking technology. The IEEE 802.3 standard developed by IEEE gives the technical standard of Ethernet, which specifies the contents of the connection, the ele
EthernetHttps://serverfault.com/questions/521443/can-wireshark-capture-an-entire-ethernet-frame-including-preamble-crc-and-inter
My question Is:is there a to capture and display the entire Ethernet frame using Wireshark?
If you had a network adapter that captures the entire frame and supplies it to the host, a driver for that adapter T Hat sets up the adapter to does, and a capture mechanism i
IEEE and 10GEA (Gigabit Ethernet Alliance) are the two most important organizations in Gigabit Ethernet standardization.Gigabit Ethernet standards and specifications are many, in the standard, the first 2002 years of IEEE 802.3ae, and then continue to have a new Gigabit Ethernet specification, such as the 2006 IEEE 802
First, the purpose of the experimentCompare the performance of shared Ethernet and switched Ethernet over different network sizes.Second, the experimental methodUse Opnet to create and simulate a network topology, and run to analyze its performance.Iii. contents of the experiment3.1 Experiment settings (network topology, parameter settings, data to be observed, etc.)Step 1: Download the It Guru, create a ne
In the previous article we introduced the Ethernet 5 layer model, which I want to learn about the encapsulation and unpacking of Ethernet data, and how Ethernet data is transmitted. First, data encapsulation when our application uses TCP to transmit data, the data is fed into the protocol stack, then passes through each layer one by one, knowing that the final to
Go-ethereum
The Go-ethereum client is often referred to as the Geth, which is a command-line interface that executes the complete etheric square node that is implemented on the go. By installing and running the Geth, you can participate in the real-time network of the front desk of the ether and do the following: Mining the real etheric currency transfer funds between different addresses create contracts, send deals to explore block history and many other
Links: Sites: Http://ethereum.github.io
Prerequisite: The following involved in the content of the need for system permissions, that is, system applications, development of non-system app is Rao edge.
Ethernet settings are generally entered into the system native Settings app, into the Ethernet option to set. In some special occasions, the need to customize the app, do not directly call the system settings, then you have to implement the
Http://blog.csdn.net/sailor_8318/article/details/3907345
Differences between switched Ethernet and shared Ethernet
A hub, also known as a hub, belongs to the data link layer in the OSI model. However, as the hub is a shared-bandwidth device, the efficiency of the hub becomes very low in the heavy network and is prone to broadcast storms. Therefore, we cannot see hubs in medium and large networks.
A vswi
IEEE has just approved the Ethernet P802.3az Energy Sensing standard, which reduces the energy consumption of networked devices while they are running.
Reducing energy consumption is the next goal of information and communication technology managers in order to spend less money and work more, energy-efficient Ethernet can save energy and reduce operating costs.
This new standard network, in most cases, au
I Current Status and Development of Industrial Ethernet Technology
The so-called industrial Ethernet is technically compatible with commercial Ethernet (that is, the 802.3 standard), but in product design, it can meet the needs of industrial sites in terms of material selection, product strength, applicability and real-time performance.With the development and po
1. Work Summary
Recently, the IEEE is working on a new project the project is to develop a standard for the operation of Gigabit Ethernet (10GbE) transmission based on the current copper structured cabling system, which is collaborating with leading experts from integrated wiring, electrical, test equipment and system design, Panduit belong to one of the leading ranks, we have foreseen that with the future increase in transmission rate, cable and conn
Ethernet switches are expanding their applications to the network core. This is mainly from two aspects: one is that Ethernet switches have the function of routers, not even, there are more than three layers of switches; the second is the maturity of the physical layer technology and the Exchange technology makes the Ethernet break through the area of the LAN, an
Static and Dynamic Ethernet Switching Technology
There are many types of Ethernet Switching Technology, each of which has its own advantages. You can use a simple mouse to increase, move, and change the structure of the exchange; network segments are more effective than bridges and routers; high bandwidth is provided for high-performance workstations or servers. Network managers are eager to use these techn
The main network elements in the Ethernet network include switches, routers, firewalls, servers, and clients. By testing the Ethernet network elements and the network itself, the network structure can be optimized, the network fault is eliminated and the network performance is mastered. Ethernet testing is also rule-based, such as the well-known rfc2544/rfc1242,
1. descriptionSet the Ethernet port description.
Description ethernet-description
No description
Parameter description]
Ethernet-description is the description string of the router ethernet interface.
Default condition]
The default description is Quidway RSeries Router and ethernet
Document directory
Ethernet Classification
Standard Ethernet
Fast Ethernet
Gigabit Ethernet
Ethernet Classification
Ethernet has gone through four generations of development:
Standard Et
Whether from the demand side or from the supply side, the overall network is moving towards broadband, which gives Ethernet a good space for development. From a technical point of view, over the past 20 years, Ethernet bandwidth from 10 trillion, hundred trillion, gigabit, has been developed to 2002 million trillion, or even 40,000 trillion, 100,000 trillion are already in the research and discussion stage,
Ethernet switches are expanding their applications to the network core. This is mainly from two aspects: one is that Ethernet switches have the function of routers, not even, there are more than three layers of switches; the second is the maturity of the physical layer technology and the Exchange technology makes the Ethernet break through the area of the LAN, an
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