In order to overcome the shortcomings of high price and low security of traditional access control system

a fingerprint password lock system based on STC89 C52 MCU is designed. Three unlock modes are proposed. The hardware uses FPM10 A optical fingerprint module to complete the operations of human fingerprint input

identification and removal

combined with electronic password unit to achieve double unlocking protection

and supplemented by LCD display

key input

unlocking control and instruction reminder modules. The software contains the initial configuration of each module and the specific logic implementation. The test results show that the fingerprint password lock system can effectively control the entrance guard

it has high fingerprint identification rate and low power consumption of system module

the security and convenience of the access control system are obviously improved.