Abstract: A method and apparatus are used to process a plurality of analog signals on a corresponding plurality of physical channels using a circuit having analog to digital converter (ADC) components, a serial port interface, and a serial port controller. Logical channel information for one or more logical channels is stored in a register on the serial port controller. Each logical channel specifies one of the physical channels and conversion information. Command bits are set over a serial port input pin, and include at least one pointer bit indicative of a selected logical channel. In response to the command bits, the serial port controller sends signals indicative of the physical channel and the converter property specified in the selected logical channel to the ADC components.

Abstract: ABSTRACT A mechanical clamp for securing a workpiece according to the invention includes a clamp plate having an end for engaging a workpiece and a fulcrum spaced apart from said end. A pivotal handle is pivotally connected to said clamp plate by a connecting rod. A base plate is disposed intermediate the pivotal handle and includes a slot therethrough for receiving the connecting rod. The cam surface of the pivotal handle selectively engages the base plate to cause the clamping force at the end for engaging said workpiece. The fulcrum concentrates that clamping force at the end of the clamp plate.