Flux Tools

Archive for February, 2010

PCB Assembly refers to the attaching of electronic components to a printed circuit board. PCBs are used to mechanically connect and support electronic components using conductive pathways, traces or tracks which are etched from copper sheets laminated onto a non-conductive substrate.

Once the PCB is completed then electronic components can be attached to produce a printed circuit assembly. The leads of the components are inserted through holes in the PCB, and in surface mount construction, the electronic components are placed on lands or pads on the outer surfaces of the printed circuit board. The component leads in both types of this construction are then mechanically fixed to the PCB with soft metal molten solder.

There are all kinds of various techniques for attaching components to printed circuit boards, and most very high volume production is generally produced by machine placement and bulk wave soldering or reflow ovens.

                Are you a big fan of poker or are you a poker player? Well, whichever you choose you must have been engaged in watching or playing poker games. Poker is one of the most popular table card games all over the world. You can actually play with your friends or your family. Or if you like, you could play in a casino. If you do not have the luxury of time or money, you could play online instead. It saves you money, it saves you time and it is usually free.

The internet offers various opportunities for playing. You can play for real money or with play money. You can play against the computer or against other people. The options are endless.

Poker rooms offer real money or free play options. You can join a table where real people play and play against them on the most popular variations of the game – Texas Hold’em, 7 or 5 Cards Stud and many other games.

Disasters are common in the world currently, from nature to car wrecks. In the personal computer industry, disasters aren’t any different. They are able to come in the type of a workplace fire, computer crashes, hard drive failure, missing IT documents, stolen hardware, and a great many other forms. Disasters can be very traumatic and nerve-wracking, nevertheless, there are actions that you can take.

Even supposing disasters can occur at any time, recovery planning doesn’t cross the mind of business owners or individuals. Most just carry out their normal every day procedures, never conscious of what could result from a catastrophe. Then, when tragedy does strike, most tend to freak out and wonder what it is they can do to set the situation at hand.

I learned a little more about IGMP and PIM this morning. Hosts use IGMP (Internet Group Management Protocol) to register with the router to join or leave specific multicast groups. The router is then aware that it needs to forward the data stream destined to a specific multicast group to the registered hosts. There are currently three versions of IGMP, versions 1, 2, and 3.

• IGMPv1 – periodically sends membership queries (60-120 sec) to the all-hosts multicast address 224.0.0.1. IGMPv4 doesn’t have a mechanism defined for hosts to leave the multicast group. There for IGMP routers learn that a group is no longer available when it times out from not receiving any queries from that particular group.
• IGMPv2 – has group-specific queries that allows a router to query membership only in a single group instead for all groups. Instead of waiting for a timeout from a particular group, the last hosts that are apart of a multicast group sends the router a specific message that it’s leaving said group.

The computer market is a huge industry right now and it doesn’t look like it’s going to let up anytime soon. A couple of things that you should be considering when buying a new computer are the cost, how easily it will be to upgrade, and the portability. When you look over the price tags of desktops and laptops, the difference is pretty extreme. So what are the key differences between the two? The first one being the cost is a given, but the computer manufactures are putting such an effort into laptop technology that they are offering desktops at a huge discount. The only advantage that a laptop has over a desktop is portability. If you don’t want the option of taking your computer everywhere with you, then you have a great way to cut down the cost of your new investment.