A lottery computer which can select numbers and/or letters randomly and with and without independence between selections. Random numbers are generated independently by having a number of counters run simultaneously for an arbitrary period of time with each counter running at a different repetition rate. Using a high repetition rate compared to the counter running time guarantees randomness. Using separate counters run by separate clocks guarantees independence between selections. Random numbers ...

A halogenated product of a low-molecular weight ethylene random copolymer comprising ethylene and at least one alpha-olefin having 3 to 20 carbon atoms, wherein: (i) the starting low-molecular weight ethylene random copolymer contains 30% to 75% by mole of the ethylene component and 25% to 70% by mole of the alpha-olefin component; (ii) the halogen content of the halogenated product is 5% to 75% by weight; (iii) the intrinsic viscosity [.eta.] of the halogenated product is 0.01 to 0.5 dl/g deter...

An automated analytical apparatus comprises an introduction station for receiving a plurality of reagent packages. Each package has a plurality of receptacles, at least one of which includes a sample liquid to be analyzed, and at least one of which includes a liquid reagent for forming a reaction mixture with the sample liquid. A liquid transfer station is included for transferring liquid contained in one or more receptacles of a reagent package into, out of or among different receptacles thereo...

A random sequence generator includes a plurality of successive stages in a closed loop wherein each of the stages includes a logic circuit and an input-output circuit, the input-output circuit having an input coupled to the output of the logic circuit. The logic circuit, which has n inputs, functions as a storage element or look-up table having 2.sup.n addresses. Connection circuitry is provided for connecting one of the inputs of the logic circuit to the output of the input-output circuit of th...

A random access memory array of binary elements each having an electrostatically attractable member moveable with respect to a stator member between positional states representative of first and second binary digits. Which positional state an element is in is ascertainable by further movement capability of only those elements which are in the state representative of the second binary digit.

Methods and apparatus for random repetitive sampling in digital oscilloscopes is disclosed using a psuedo-random noise generator to vary randomly the beginning of a search for a trigger event to enable the acquiring of data which has no gaps.

A random timer including a drive motor, an output means, and a power circuit connecting a power supply to the drive motor and output means and where two dissimilar timing elements are controlled by the drive motor, and the power circuit includes a multi-contact switch having a normally closed terminal position and a normally open second terminal position, a control member associated with the switch to move it from its normally closed position to its second position, and a control means individua...

1. A generator for producing random binary bits comprising in combination, eans for producing a random noise electrical signal, means coupled to the output of said signal producing means for converting said random noise electrical signal into a variable width square wave signal having polarities proportional to the polarities thereof at any given instant, means connected to the output of said converting means for producing a plurality of constant frequency pulses the number of which is proportio...

A random automatic selector comprises a spiral rotor for sequentially lifting up and dropping the front edges of file cases so as to weaken the friction between adjacent file cases. A designated file case is dropped to a lower level because projections of the file case are not supported by any code bars since the corresponding code bars are lowered. A separation angle bar is inserted in a vertical separation recess of the designated file case and under the bottoms of the other file cases, the fr...

The present invention provides as compositions of matter, linear random copolyester resins having intrinsic viscosities ranging from 0.5 to 1.0 deciliters per gram, said copolyester resins being the polymeric reaction products of a mixture of reactants consisting of ethylene glycol, terephthalic acid or a lower C.sub.1 -C.sub.4 dialkyl ester thereof, phthalic acid or phthalic anhydride, and an aliphatic dicarboxylic acid or lower C.sub.1 -C.sub.4 dialkyl ester thereof and said copolyester resins...