Statistical teaching apparatus
US4493651A · kind A · utility
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Key dates
| Filing date | Mar 5, 1984 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Mar 5, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B23/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A statistical teaching apparatus includes a plurality of parallel circuits selectively coupled to an operational amplifier. Each circuit is adapted to receive a component from a population being statistically evaluated. The circuits include amplifier feedback elements arranged to selectively cause the amplifier to produce an output voltage representing the value of a parameter of any selected component or the average parameter value of any selected group of components so as to permit plotting of actual parameter values of a selected subgroup and measuring the average parameter value of that subgroup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.