| 摘要 |
In an electronic control system for controlling the setting of two or more continuously variable parameters, the system comprises a hand operated lever and electronic processing means 14 having an input from the lever 1 and output means for outputting a signal or signals representative of the said continuously variable parameters, characterised in that:a) the lever 1 is arranged in a gate having two substantially parallel slots 3-5 and a transverse slot 6, the position of the lever 1 in each of the two parallel slots being substantially continuously variable and corresponding to a desired value for one or more of the said continuously variable parameters;b) the processing means includes means 14 for storing a record of the position of the lever 1 in one of the said slots after the lever has been removed from the slot.
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