Abstract: An apparatus (10) is provided for detecting an atmospheric component. The apparatus, capable of being inserted into an electronic device (30) having an imager (36) and a processor, comprises a substrate; one or more calorimetric reagents (14) positioned on the substrate; one or more reference colors (16), each associated with one of the one or more colorimetric reagents; and data bars (18) positioned on the substrate depicting information about the one or more colorimetric reagents; wherein, when the apparatus is inserted in the electronic device, the imager is capable of detecting colors of the colorimetric reagents based upon the one or more reference colors and information from the data bars, the processor determining whether an atmospheric component is present based upon whether any colors of the colorimetric reagents have changed.

Abstract: A generic interface controller for a processor to peripheral device interface. This circuit eliminates marginal timing between a processor and a plurality of different peripheral devices while providing read and write operations within a minimum amount of cycle time. The processor interface controller generates read, write and acknowledge signals. This controller is particularly useful for ASIC applications where some of the peripheral devices such as memory, may be co-located on the ASIC circuit while other peripheral devices may be remotely located from the application Specific Integrated Circuit (ASIC) circuit.

Abstract: Waveform digitization techniques and apparatus are shown. An input waveform is shown on a display device such as an oscilloscope as a high density sequence of either horizontal or vertical line segments which track the overall shape of the waveform. This digitization technique includes determining minimum and maximum values of the input waveform and storing these as sets. As these minimum and maximum samples are collected, each sample is compared with a previous minimum and maximum value that had been found during a current line period. The minimum and maximum values for the total line period are stored in a memory. Under processor control these sets of minimum and maximum samples are displayed on a visual display device such as an oscilloscope.

Abstract: Waveform digitization techniques and apparatus are shown. An input waveform is shown on a display device such as an oscilloscope as a high density sequence of either horizontal or vertical line segments which track the overall shape of the waveform. This digitization technique includes determining minimum and maximum values of the input waveform and storing these as sets. As these minimum and maximum samples are collected, each sample is compared with a previous minimum and maximum value that had been found during a current line period. The minimum and maximum values for the total line period are stored in a memory. Under processor control these sets of minimum and maximum samples are displayed on a visual display device such as an oscilloscope.