Hello friends, I hope you all are doing great. Today, I am going to share the new Crystal Library for Proteus . Every clock you own counts the vibrations of a tiny piece of quartz: the watch on your wrist, the real-time clock in your PC, the microcontroller on an Arduino board and the radio in your phone. A quartz crystal rings at one frequency so precisely that a cheap watch drifts only a few seconds a month. On a schematic it is two plates in a box; in real life it is a mechanical resonator with a set of numbers that decide whether your circuit keeps time, runs fast, runs slow or never starts at all. Updates Crystal Library for Proteus Latest version: V1.0 (November 2026, this tutorial) Other component libraries: C945 Transistor · PC817 Optocoupler · Relay Module · Resistor · 5 mm LED · ...