Basically all hearing AIDS have the same structure. The basic element of a hearing aid is a sound amplifier. It is connected to the microphone, perceiving external sounds, and the phone (speaker) reproducing amplified sound. In addition, there are controls (volume control, switch, switch programs) and a battery. As the complexity of hearing AIDS and reduce its size the number of controllers is reduced, and currently remain, in essence, only the power switch, which is combined with the battery cover.
Collection
MICROCAR FDD
I was born in 1944, and almost from the first year of life I was haunted by a sound — an ominous growl bearings rolling on asphalt. The sound that accompanied the movement on a small wooden carts returned from the war disabled legless…
And at that time was a lot — according to current estimates, over three million. The majority of former fighters of order-bearers disappeared in the vast expanses of our country, but many settled in cities, including the capital of our country. And their only vehicle was at the time knocked together from planks truck with ball bearings, equipped with a pair of rough, reminiscent of the iron wood, which the disabled, starting from the road, causing her to move…
MODELIST-KONSTRUKTOR 1966-03
IN THE ROOM:
The sea is calling. Yarov R. (1);
Micromatic “Protein”. Larnin M. (4);
Karting on ice. Kononov L. (6);
THREE-DIMENSIONAL JIGSAW PUZZLES
3D puzzle is a special puzzle game. Just imagine your hands you collect miniature replica of big Ben or St. Basil’s Cathedral. And, maybe you are interested in cars, planes or military equipment? For kids too, there is a three-dimensional jigsaw puzzles – for example, fairy houses.
BREAD
A Millennium technique and technology of production of bread remained virtually unchanged. Heavy manual labor of the bakers of Ancient Rome almost did not differ from toil bakers tsarist Russia in the twentieth century. And only in the twenties, when our country was created by the baking industry, to replace the ancient bakeries come highly mechanized enterprise. If the “Tsar’s Palace bread” in the Kremlin under Boris Godunov was baked the day 5 tons of bread and fed 5 thousand people, built in Soviet times, the bakery produces daily 300 – 500 tons of bread. Each factory and today provides bread to a million people.
MAIN BATTLE TANK “ABRAMS”
Large-scale work on designing a new main battle tank began in the USA after the termination in 1970 of the joint with Germany development of a promising tank МВТ70. In February 1972, the United States was formed the operative group, composed of military and representatives of the companies-developers. Their task was the formulation of a concept of the future tank ХМ1. The result of the work of this group was “Requirements for the material,” published in August 1972. A new tank was developed on a competitive basis. To participate in the competition, the Pentagon chose two companies: Chrysler and “GM”. 18 July 1974 was signed with them the contract to develop and manufacture prototypes of a new tank. Under the terms of the contract, prototypes were to be presented for testing by early 1976.
T92 LIGHT TANK
Received in 1966 the US Army light tank М551 Sheridan made a splash among specialists. The case of aluminum alloys, 152-mm gun — launcher ATGM “Shillelagh”, the ability of the transport aircraft and parachute landing — it was all tanks for US, and for most light tanks the rest of the world a new word in the design and tactics of application. However, the value of these innovations were controversial, but it is not even that… All of the above is well known to many history buffs tanks. Much less known is that if the “cards lay” differently, the American army would get a completely different, though no less interesting light tank T92.
EKRANOPLAN “LUN”
In 1987, the water came down, “LUN” the first ship of the series of combat missile-carrying wig weighing 400 tons was the Chief designer V. Kirillov was. The ship was armed with three pairs of cruise missiles 3М80 or 80M “Mosquito” (NATO designation SS-N-22 Sunburn). The second “LUN” is also laid as a missile, but the outbreak of the conversion has made adjustments, and it was planned to build as a rescue.
MODELIST-KONSTRUKTOR 1966-02
IN THE ROOM:
(01) Lavrov A. Young innovators;
(03) Wells V. – Faster than the wind;
(06) Krivonosov L. – the ABC of shipbuilding;
Only 30 years ago, no one could tell what it is, not to mention what wonders he can create. Times have changed. And today it is difficult to imagine a modern home or office where there is at least one such revolutionary inventions.