Any remote can be a universal remote with enough effort

Your Apple TV 4K remote isn't meant to be a universal remote, but with the right tweaks it can control everything you need.
TechPP

This Is the Only Bluetooth Remote App Your Need if You Have a Smart TV

If you are searching for your smart TV remote replacement Android app, then you should definitely check out Bluetooth Remote.
wepc

RCA universal remote codes: complete list & setup guide

This is the most reliable method if you have your TV brand code. If your remote still isn’t responding, the issue is usually one of these: Wrong device mode (TV vs DVD vs AUX) Weak or dead batteries ...
IEEE

A Novel Color Control Method for Multicolor LED Systems to Achieve High Color Rendering Indexes

Abstract: A novel color control method for multicolor light-emitting-diode (LED) systems is proposed. The proposed control method can achieve high color rendering indexes by approximating the spectral ...
IEEE

A Novel Ferroelectric FET Based Universal Content Addressable Memory With Reconfigurability for Area- and Energy-Efficient In-Memory-Searching System

Abstract: In this work, a novel ferroelectric FET (FeFET)-based universal content addressable memory (UCAM) is proposed and experimentally demonstrated for the first time. By utilizing the ...