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Electronics

Electronics are a branch of technology and science that deals with the control of the flow of electrons.

3,725 Questions

What can you search an electronic catalog by?

You can use keywords to search an electronic catalog. Some catalogs include a power search feature and quick search feature. Depending on the catalog, you can search by author, title, or subject.

What is the mesh and node in analog electronics?

It depends on the context. If in the context of Wireless Internet, which certainly involves analog electronics, a "wireless mesh network" is a network that relies on all nodes to propogate signals.

If it is lumped element circuit theory you have in mind, the "node method" and "mesh method" of circuit analysis both apply Kirchoff's Laws to analyze a circuit. The idea behind either method is to simplify the application of these laws, to come up with a method simpler than brute force solution of a system of linear equations.

In the node method, a 'node' is a reference point chosen to have 0 potential; in the mesh method, a 'mesh' is a closed current loop not containing any other loop.

Google "mesh node method circuit analysis" for lots of references supplying the details of either method.

What does masquerading mean on a computer?

Often, this means MAC masquerading. MAC is the unique hardware address to an ethernet adapter. For instance, your computer would have one MAC address for a wired ethernet port, and another for a wifi adapter.

Masquerading means passing off another MAC as the one actually belonging to the adapter.

Example:

You have a cable modem connected to your cable ISP, and a single computer connected to the modem. Your computer wired ethernet MAC is 11:22:33:44:55:66.

You go out and buy a new wifi router+access point, and try to connect it to the modem, and connect your PC to the access point via WiFi. It doesn't work. You connect to the access point but not the internet.

Why not?

When your modem was initially set up with the ISP, the ISP "provisioned" (allowed access to) the MAC address of your PC (11:22:33:44:55:66).

Now that the router is connected to the modem, the ISP sees the MAC address of the router (99.88.77.66.55.44) and does not see the "allowed" MAC address of your PC because your PC is no longer directly connected to the ISP.

Proper fix: Call ISP and re-provision the new MAC address of the router.

Quick fix: set up the router's MAC masquerading function to transmit the old PC MAC address instead of the router's MAC, tricking the ISP into thinking the old hardware is still connected.

What does Class b electronics mean?

b class means the product did not pass the manufactures top quality check. It could be cosmetic or a slight defect. Usally does not affect product operation and you may not even notice any problem with the device. It will not be warrantied through the manufacture because it was sold at a lower price because of the rating. b class does not mean refurbushed. you are taking a "slight" risk of the product failing, but usally the seller will warranty the product for 1 yr. Most times if the product doesn't fail withing a few weeks, it is usally ok.

2 12 volt batteries to 24 volt?

To get 24V from 2 12 V battery's Yo hook up the positive pole + of one of the battery's to the negative pole - of the other one. you will be left with a positive pole on each battery wit no connection on them The voltage between them is 24.

If you want the battery to have the same voltage but have more amperage you connect positive to positive and negative to negative.

What is universal serial bus port?

The Universal Serial Bus (USB) port is an input/output port that allows the transfer of data from the computer's hard drive to the portable hard drive (e.g. flash drive). The port serves as the communication mechanism between the two hard drives.

Why cant you do a defragmenter on your computer?

You may not be a computer administrator, however sometimes you can still do one.

Your computer may not need a defragment.

Your computer does not have enough free space. Computers need about 15% of space to be free before you can defragment.

What type of electronics does CeX sell to consumers?

Phones, DVD players and games. They are able to sell and distribute these items. Also things like tablets and cameras, monitors, and computers. So it would be a great selection to choose from.

What is parity generation?

Add up all the bits in a "word" - usually in 7 bits of an 8 but byte, and use the top bit in the byte to store the result. If there is an even number of bits set, the "parity bit" is 0, and if it is odd, the "parity bit" should be 1.

Electronic circuits can easily be made that generates this on say a COM port, that transmits one bit at a time and makes it possible to detect errors in the communication. It is also used in RAM memory - also to identify faulty memory chips. On disks they use more than 1 bit, and will here call it "ECC" - "Error Correction Circuitry". This is based on 3 bits that enables reconstructing the byte, not just detect an error.

Dense storage and fast transmission is always a trade-off with the correct stored data or data transmitted. Where the errors can be corrected without reducing capacity this is used.

Where can you find a competitive profile matrix for Samsung Electronics?

The competitive profile matrix for Samsung Electronics can be found at the Samsung Electronics shops. It is only the Samsung accredited shops where the competitive profile matrix are offered.

How using two-input logic gates of your choice design a circuit to determine if two 3-bit numbers are the same or different?

Three 2-input XOR gates and one 3-input NOR gate will do the work. Connect each output of each XOR gate to one input of the 3-input NOR gate and apply the two 3-bit words to the inputs of the XOR gates. If X (X2X1X0) and Y(Y2Y1Y0) are two 3-bit words, X2 and Y2 will connect to one XOR gate, X1 and Y1 to the next XOR gate and X0 and Y0 to the last XOR gate. You could see the result of the operation on a LED connected to the output of the NOR gate. Other implementations are also possible of course.

The solution above is absolutely correct, but includes a 3 input gate. If the task is to use only two input gates, then a small change will be needed. Take the outputs from any two XOR gates into a 2 input OR gate. Then take the output of the OR gate and the output of the third XOR gate into a 2 input NOR gate. The operation remains identical to the first solution but adheres to the brief of using gates with 2 inputs. In the real world, there is probably no reason to impose such a limitation on a design so the first solution would normally be the preferred route to take.

What is an electronic latch?

An electronic latch is a simple bi-stable state-holding circuit. That means it has two stable "states", kind of like a light switch (ON and OFF). Once the latch is switched ON, it will stay there until it is switched OFF or until power is lost, and vice-versa.

Latches can be built in a variety of ways, but the most commonly studied latch is the S-R latch made with NAND or NOR gates. In this latch, "SET" is the name of one state, and "RESET" is the other state:

http://www.play-hookey.com/digital/rs_nand_latch.html

Latches can be used to build memory circuits in digital systems. There are millions of latch circuits in a computer system.

What is electrical splice?

The joining together of two or more conductors in an electric circuit.

What is Bulk resistance in terms of basic electronics?

please tell about the BULK and its role in the fabrication of CMOS ?

Find First Day of Issue stamp Progress In Electronics?

Scott US#1500 1501 1502 and C86

There were four stamps issued in a set in 1973. If there is one stamp on the envelope, it is probably worth about a $1. If one envelope contains all four stamps, it would be worth a bit more.

What are some major ict inventions?

ICT INVENTIONS:

  • laptop
  • email
  • keyboard
  • computer
  • typewriter
  • Internet (world wide web)
  • telegraph
  • google/bing/ask
  • telephone