The square-wave signal of the power was generated by microchip computer system based on AT89C2051. MAX267 program control chip with general filtering wave was used in the filtering circuit, LM1875 power magnify part was used in power magnify circuit.
As for the report form problems in the procedures of developing management information system with Visual Basic, the method of using Excel 2000 to create data report is introduced in this paper combined a concrete instance, It focuses mainly on the data filling and the program control of report s format.
Participants had more favorable attitudes toward learner control than program control.
The four versions of the instructional program were created by crossing the two control conditions (learner control, program control) with the two program modes (full, lean).
Children were randomly assigned to one of three experimental conditions: (a) watching an English television program with Dutch subtitles, (b) watching the same English program without subtitles, and (c) watching a Dutch television program (control).
Program control, however, seems to minimize the performance differences between low and high levels of SRLS.
Results revealed that the performance differences between learners with high SRLS and those with low SRLS were greater under learner control than under program control (p>amp;lt;.05).