Ventilators are typically used by ALS patients having difficulty breathing. There are several kinds of non-invasive ventilators, such as small devices that fit over the nose and mouth. Patients may also opt for a tracheostomy, a surgical procedure in which a tube is placed into the throat.
3. Counters. A counter is a digital sequential logic device that will go through a certain predefined states (for example counting up or down) based on the application of the input pulses. They are utilized in almost all computers and digital electronics systems [1].
Epoxy Resin Countertops. Resin is a type of solid surface countertop but with more variations. It is produced in a pleasing array of colors and textures. Pros and Cons of Resin Countertops: On the plus side, resin counters are very durable, impact-resistant and very easy to clean. Most hold their color very well, even in direct sunlight.