Abstract: A circuit for linearizing analog-to-digital output is shown in FIG. 2, with an analog signal V.sub.i transmitted by input circuit 10 is applied to an input port of an analog-to-digital converter 12 controlled by a sampling signal V.sub.s, to provide digital data V.sub.d on an "N" bit data bus 14. An analog-to-digital linearizing memory 16 storing a look-up table of digital values, is coupled to bus 14 to receive the digital data V.sub.d, and to respond to the digital data V.sub.d by providing true linear digital values from the look-up table to digital data processing system DSP 20 via an "N" bit data bus 18. A microprocessor 22 is temporarily coupled between the output port of converter 12 and the input port of memory 16 via bus 14, to serve as a switch between bus 14 and a programming memory 24 containing a table of true linear digital values V.sub.t. A known test signal is applied to input circuit 10, and true linear digital values V.sub.

Abstract: A nursery cultivating assembly is carried on a modified zero turning radius tractor and includes a cultivating device, a spraying device, and a tank assembly operably interconnected thereon, while providing for trees to be planted closer together.

Abstract: A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory.

Abstract: A multi-functional nursery cultivator includes a carrier support having a tank assembly operably secured thereto with a spraying assembly operably connected to tank assembly. The carrier support is rendered mobile and is powered by a detachable zero-turning radius tractor. Additionally the spraying assembly can be modified to include a cultivating assembly.

Abstract: A blade assembly for hard earth road graders has a support frame for attachment to the mouldboard of the road grader and a plurality of evenly spaced picks located in sockets spaced along the lower edge of the support frame. The picks have spigots to releasably locate in the support frame sockets and engage with the support frame to prevent relative rotation between the spigots of the picks and respective sockets. The picks each have a tungsten carbide tile attached to their front face with a straight transverse cutting edge along the lower edge. In use the working face of the picks is perpendicular to a road surface to achieve a shaving action.