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].
Different self-checkout machines from IBM, Fujitsu and NCR (source: respective vendors). Youâve seen the self-service checkout kiosks at your local supermarket. An alternative to checkout lanes staffed by cashiers, they are introduced to offer customers more control, convenience, and a speedier checkout option. While retailers claim to install them to improve customer service, we also know these machines can help them redeploy their cashiers.