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Electronic stringing machines control the tension with a computer-directed electric motor, resulting in fast paced stringing and exceptional accuracy. This is the most common kind of stringing machine found in racquet sport shops. Reliable constant pull stringing machines usually cost $3,000 and more. This type of stringing machine is found at ...
Bull Gamma series The Bull Gamma 3, 1952, one of the earliest commercial computers Gamma 3 (1952) Gamma 55 [1] (1967) (also known as GE 55) Gamma 60 [2] (1960) Gamma 30 (1964) (RCA 301) Gamma M 40 (1965) Gamma 10 (1966) CAB 500 (1961, sold under license from Société d'Electronique et d'Automatisme) Série 300 TI (1962) GE-600 series (1965) GE ...
Ektelon, Inc. was an American manufacturer of equipment for racquetball. Originally based in Bordentown, New Jersey, Ektelon was founded by Franklin W. "Bud" Held in 1964 as the first company to manufacture racquetball racquets and stringing machines, [1] not long after the development of the sport of racquetball by Joe Sobek.
The Gamma 3 was an early electronic vacuum-tube computer.It was designed by Compagnie des Machines Bull in Paris, France and released in 1952.. Originally designed as an electronic accelerator for electromechanical tabulating machines, similar to the IBM 604, it was gradually enhanced with new features and evolved into a first-generation stored program computer (Gamma AET, 1955, then ET, 1957).
The Bull Gamma 60 was a large transistorized mainframe computer designed by Compagnie des Machines Bull.Initially announced in 1957, the first unit shipped in 1960. It holds the distinction of being the world's first multi-threaded computer, and the first to feature an architecture specially designed for parallelism.
The roentgen or röntgen (/ ˈ r ɛ n t ɡ ə n,-dʒ ə n, ˈ r ʌ n t-/; [2] symbol R) is a legacy unit of measurement for the exposure of X-rays and gamma rays, and is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air (statcoulomb per kilogram).