A system, method and article of manufacture are provided for performing a comparative analysis of vendors of network-related products or services. Thus, the manufacturing process can be simplified and a logic-merged memory operating at a high speed is provided. The male plug is disconnected from the receiver by operating the latch operator or by pulling the male plug out of the receiver. The second instance of the OS includes a kernel shared between the first and second instances of the OS. In order to maintain the moving average of the data transfer rate within a specified range, the mobile unit transmits maximum data rate requests or null data requests to the base station. The control mechanism includes an electronic control means responsive to the degree of relative movement of the adjustment member and the pedal arm to produce a control signal proportional to such movement, and a motor mounted on the bracket adjacent the control mechanism, and a drive means connecting the motor to the control mechanism for moving the control mechanism and pedal arm as a unit.