Learn how to build an astable 555 timer oscillator for an 8-bit computer clock in this detailed video tutorial. Explore the circuit diagram, understand duty cycles, and calculate charge and discharge times. Observe the oscillator's behavior using an oscilloscope, discover the impact of a mystery capacitor, and receive power supply recommendations. Gain hands-on experience with electronic components like resistors, capacitors, and ICs while constructing a fundamental element of computer architecture.