A vacuum tube is simply a tube with no oxygen nor carbon dioxide in it (aka no air).
Kilobytes and vacuum tubes are not in the same category. At best, a twin triode vacuum tube is a single flip-flop and can hold 1 bit of information, making a vacuum tube about 0.000122 of a kilobyte.
an electron tube containing a near-vacuum that allows the free passage of electric current.
There were obvious differences between the trasisitor and the vacum tube. The transistor was faster, more reliable, smaller, and much cheaper to build than a vacuum tube. One transmisor was the equivalent 40 vacuum tubes. They also didn't produce heat compare it to a vacuum tubes. Conduct electricity faster and better than vacuum tubes.
It Helps Clean Your House!!:)
There are many stores in Austin, Texas that sell Dyson vacuum cleaners. Dyson vacuum cleaners can be found at department stores such as Home Depot and Lowes.
Vacuum bags are disposable, most discount stores and grocery stores sell them.
Home depot is one of the stores in Canada that sell Nutone vacuum bags and so does Lowe's. These stores have very good quality items and are popular in Canada to purchase vacuum bags.
A vacuum tube can be tested with an array of power supplies and meters if you have detailed schematics and tube test procedures. However it is easiest to use a standard Tube Tester. In the day there you could find self service box-like testers in certain drug stores or part supply stores. Most metropolitan areas still have electronic stores that specialize in selling Radio and Vacuum Tubes, and they would have tube testers that you can access. Ebay lists a number of vacuum tube testers but you need to make sure its working and that it has the booklet to set the many test switch positions for the particular tube you want to test.
the vacuum tube
Vacuum food sealers can be found at you local Wallmart, Sears, or Best Buy stores, and can even be purchased online.
You can find Electrolux vacuum bags in Vermont at sears and targets. If the stores do not have them in stock you can always shop online at amazon or evacuumstore.
There are a vast number of stores, both online and offline, from which Miele FJM vacuum bags may be purchased. These include Vacuum Direct, Sears, Amazon and of course eBay.
One can purchase a Eureka central vacuum from Sears and The Bay. One can also purchase this central vacuum from stores which sell vacuums and vacuum supplies.
If you are interested in purchasing a lightweight backpack vacuum, there are many stores that sell them. Websites such as uline and govacuum have them available.
A vacuum tube does not contain any gases. All the gases are evacuated from the tube and only vacuum is left.
One can purchase a Dyson DC18 Slim Vacuum in a variety stores. There are a large number stores that sell such a cleaning utensil such as Walmart and Target.