Musical door bell / Mohd Azuan Abdul Aziz and Roslan Bakar

• Main Authors: Abdul Aziz, Mohd Azuan, Bakar, Roslan
• Format: Student Project
• Language: English
• Published: 2001
• Subjects: TK Electrical engineering. Electronics. Nuclear engineering; Electronics; Apparatus and materials; Semiconductors; Detectors. Sensors. Sensor networks; Microelectromechanical systems; Applications of electronics
• Online Access: https://ir.uitm.edu.my/id/eprint/50376/1/50376.PDF; https://ir.uitm.edu.my/id/eprint/50376/

The musical door-bell generates 16 different notes in three seconds and repeats the cycle for about ten seconds when the ‘press switch’ is pushed momentarily. This circuit consists of clock oscillator using the popular timer 1C 555, 4 bit-bmary counter 7493 and digital-to-analogue converter using fo...