Abstract: A method for random number generation includes generating random number sequences using a Random Number 5 Generator (RNG) circuit having an externally-modifiable configuration. The RNG circuit generates a first random number sequence having a first measure of randomness, and modifies the configuration of the RNG circuit, causing the RNG circuit to generate a second random number sequence having a second measure of the randomness, indicating a degree of the randomness that is no less than the first measure.

Abstract: A method for random number generation includes generating random number sequences using a Random Number Generator (RNG) circuit having an externally-modifiable configuration. The RNG circuit generates a first random number sequence having a first measure of randomness, and modifies the configuration of the RNG circuit, causing the RNG circuit to generate a second random number sequence having a second measure of the randomness, indicating a degree of the randomness that is no less than the first measure.

Abstract: A shoulder rest for an instrument such as a violin or viola, comprising an elongated support suitable for resting on a user's shoulder, and an attachment device adjacent each end of the support for attachment to the instrument with the support spaced away from the back of the instrument. The attachment devices each include a base part upstanding from the support, and a pedestal mounted on the base part and carrying a clamping member terminating in recesses engageable with a back portion of the instrument. The invention provides a single shaft connecting the base part and the pedestal which passes through a bore in the pedestal which bore is elongated in cross-section and allows the pedestal to both tilt relative to the base part and to fold down onto the support when the shoulder rest is detached from the instrument, so as to reduce the height for storage.

Abstract: A shoulder rest for an instrument such as a violin or viola, comprising an elongated support suitable for resting on a user's shoulder, and an attachment device adjacent each end of the support for attachment to the instrument with the support spaced away from the back of the instrument. The attachment devices each include a base part upstanding from the support and having a bearing generally aligned with an adjacent end of the support, a pedestal connected to the base part by a shaft rotatable within the bearing, and a clamping member carried by the pedestal and terminating in recesses engageable with a back portion of the instrument. The invention provides torsion springs acting between the pedestals and the base parts so that angular displacement of the support relative to the clamping members is resisted by the springs.