Tube

Tube, or Tubes, may refer to:

Film, television, and Internet

Music

Construction and mechanics

Tube (BBC Micro)

In computing, the Tube was the expansion interface and architecture of the BBC Microcomputer System which allowed the BBC Micro to communicate with a second processor, or coprocessor.

Under the Tube architecture, the coprocessor would run the application software for the user, whilst the Micro (acting as a host) provided all I/O functions, such as screen display, keyboard and storage devices management. A coprocessor unit could be coldplugged into any BBC Micro with a disk interface (whose ROM contained the necessary host software) and used immediately.

Implementation

The 40-pin IDC "Tube" connector was a simple slave connection to the host processor's main bus, with 8 data lines, 7 address lines, and an interrupt input. The Tube protocols were implemented by hardware in the attached device.

Inside the coprocessor unit a proprietary chip (the Tube ULA, manufactured initially by Ferranti) interfaced and logically isolated the host and coprocessor buses. This allowed the Tube to work with a completely different bus architecture in the coprocessor unit. The only other active components needed were a microprocessor, some RAM, a small ROM containing processor specific client code, glue logic such as an address decoder and a power supply.

Tube (container)

A tube is a soft squeezable container which can be used for thick liquids such as adhesive, caulking, ointment, and toothpaste. Basically, a tube is a cylindrical, hollow piece with a round or oval profile, made of plastic, paperboard, or aluminum. Both ends of this tube are treated differently during the manufacturing process and filling. In general, on one end of the tube body there is a round orifice, which can be closed by different caps and closures. The orifice can be shaped in many different ways. Plastic nozzles in various styles and lengths are just one good example.

To attach caps and closures, in most cases a thread is tapped onto the opening structure. Furthermore, something all aluminium tubes have in common is that the other open end is folded several times after the contents have been added. The tube is thus hermetically sealed and nearly germ-free due to the high temperatures during the production process. Furthermore, it is possible to coat the inside of the tube with special coatings to prevent the material from reacting with the contents.

Noma

Noma may refer to:

Biology

Organizations

People

Places

NOMA (company)

NOMA was an American company best known for making Christmas lights. It was once the largest manufacturer of holiday lighting in the world, but since 1967 has existed only as a licensed trademark. It is now held by Inliten, LLC, of Glenview, Illinois.

NOMA was formed in 1925 as the National Outfit Manufacturer's Association, a trade group made up of 13–15 smaller manufacturers hoping to gain competitive advantage by combining their marketing and purchasing power. In 1926, the association’s members officially incorporated as the NOMA Electric Corporation and began selling NOMA-branded light sets.

NOMA introduced a number of innovations to holiday lighting, including:

When the NOMA Electric Company was located in New York City, it may have produced the first commercial printed circuit board in 1946 with its Party Quiz Game. It was an electrical board game with replaceable question cards and two electrodes which, when placed in the proper positions to answer a question correctly, cause a bulb to light. Initially hard-wired, the game was made thinner by hot pressing aluminum foil onto cardboard, with the electrical contacts made into the board.

List of craters on Mars: H-N

This is a list of craters on Mars. There are hundreds of thousands of impact crater on Mars, but only some of them have names. This list here only contains named Martian craters starting with the letter H – N (see also lists for A – G and O – Z).

Large Martian craters (greater than 60 km in diameter) are named after famous scientists and science fiction authors; smaller ones (less than 60 km in diameter) get their names from towns on Earth. Craters cannot be named for living people, and small crater names are not intended to be commemorative - that is, a small crater isn't actually named after a specific town on Earth, but rather its name comes at random from a pool of terrestrial place names, with some exceptions made for craters near landing sites. Latitude and longitude are given as planetographic coordinates with west longitude.

H

I

J

K

L

M

N

See also

References

External links