| 摘要 |
A digital-code operated circuit for an electronic lock is provided. The circuit comprises a switch means to alternatingly close and open a circuit to provide pulses of specific numbers and groupings. The groupings constitute digits and sequence of digits respectively, converting means to convert the number of the pulses per digit and the number of the groupings per digit sequence from serial to parallel. The circuit also comprises discrimination means to distinguish between discrete pulses constituting a single digit and between complete digits constituting a digit sequence, memory means to store the data produced by the converting means, program means in which the digital code can be set, and verification means to verify whether the pulses provided by the pushbutton means produce digit sequences conforming to the digital code as set in the program means, wherein a signal for the unlocking of the lock is provided only by conformance with the code.
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