CD4520 digital coded lock circuit

Published:2011/7/25 2:49:00 Author:chopper | Keyword: digital, coded lock | From:SeekIC

Figure shows the general-purpose digital coded lock circuit formed by the CMOS digital integrated circuit, which is characterized by a wide supply voltage range, low power consumption, anti-jamming performance, fewer external components.There are 256 password combinations, and it is of pseudo-code switch, and has a good security feature, the circuit is shown as figure.The coded lock circuit consists of a dual-binary synchronous add counter CD4520,and there are two binary counters of same structure in the circuit.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Automatic_Control/CD4520_digital_coded_lock_circuit.html

Print this Page | Comments | Reading(3)