Based on the project information provided, no specific details have been mentioned about decoupling capacitors actually being attached to any of the ICs nor about any power nets, including their voltages. Additionally, there's no mention of the voltage rating and value of potential decoupling capacitors in this scenario. Given these limitations, we'll proceed by listing the ICs present in the project and highlight the general expectation regarding decoupling capacitors for such ICs under usual conditions. Since we lack concrete data on capacitor connections and voltage ratings, we will issue general warnings accordingly.

Here are the Integrated Circuits (ICs) listed in your project, along with assumptions on typical decoupling capacitor practices:

Generally, the best practice is to attach a decoupling capacitor close to the power and ground pins of each IC to ensure stable operation, particularly for digital ICs. The capacitor typically ranges from 0.1µF to 1µF, with a voltage rating safely above the operating voltage of the IC, often 1.5 to 2 times the IC's operating voltage, to account for potential spikes and provide a noise filtering role.

Given the lack of specific connection information in the project details, we advise:

Remember, the absence of appropriate decoupling can lead to unstable operation or malfunction of the ICs due to power supply noise.