Abstract: A personal computerized dictionary to which not only positive but also negative versions of words can be added by the user to customize the spelling check module to a specific application. In a preferred embodiment, such a dictionary is incorporated in a spelling check module for use in conjunction with an electronic typewriter or personal computer of the type which has a keyboard and a data processor interconnected by a respective keyboard connector and a data processor connector. The spelling check module includes male and female connectors which are arranged to receive the keyboard connector and data processor connectors. The spelling check module is installed by disconnecting the keyboard connector from the data processor connector and interposing the spelling check module therebetween by connecting the keyboard connector and the data processor connector to the respective connectors of the spelling check module. The spelling check module is controlled by selected non-printing, non-control keys.

Abstract: A circuit and method for page addressing computer read-only memory (ROM) includes expanded ROM (12 and 13) and an address signal generator (20). Address signal generator (20) includes address line generator (21) for providing sufficient additional binary lines to expanded ROM (12 and 13) for addressing the entire expanded ROM memory space and a decoder circuit (22) for detecting the presence of prechosen addresses on the computer system address bus. The prechosen addresses permit selection of page increments in expanded ROM memory space for addressing over the more limited system address bus received by the original ROM.

Abstract: A spelling check module for use in conjunction with an electronic typewriter or personal computer of the type which has a keyboard and a data processor interconnected by a respective keyboard connector and a data processor connector, includes male and female connectors which are arranged to receive the keyboard connector and data processor connectors. The spelling check module is installed by disconnecting the keyboard connector from the data processor connector and interposing the spelling check module therebetween by connecting the keyboard connector and the data processor connector to the respective connectors of the spelling check module. The spelling check module is controlled by selected non-printing, non-control keys, and also includes a personal dictionary to which dictionary words can be added by the user to customize the spelling check module to a specific application.

Abstract: A process for analyzing a sample of cuttings from oil or gas wells includes as its first step and determination of the water and light hydrocarbon content of the sample. The sample may then be sieved to remove any powders which may affect subsequent steps. The sample is also sieved to separate it into medium and large size fragments which are then weighed. A medium sized fragment is ground, mixed with potassium bromide (KBr) and tested with a Fourier transform infra red spectrometer to determine its mineral content. The larger size fragments are heated in an oven to burn off their volatiles and reweighed to determine their heavy hydrocarbon content. The large size fragments may now be tested with a helium pycnometer to determine the grain density of the sample, a second pycnometer, which uses a clay suspension as the working fluid, to determine the bulk density and porosity of the sample and a permeameter to determine the permeability of the sample.

Abstract: A process for analyzing a sample of cuttings from oil or gas wells includes as its first step the determination of the water and light hydrocarbon content of the sample. The sample may then be sieved to remove any powders which may affect subsequent steps. The sample is also sieved to separate it into medium and large size fragments which are then weighed. A medium sized fragment is ground, mixed with potassium bromide (KBr) and tested with a Fourier transform infra red spectrometer to determine its mineral content. The larger size fragments are heated in an oven to burn off their volatiles and reweighed to determine their heavy hydrocarbon content. The large size fragments may now be tested with a helium pycnometer to determine the grain density of the sample, a second pycnometer, which uses a clay suspension as the working fluid, to determine the bulk density and porosity of the sample and a permeameter to determine the permeability of the sample.