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].
These 10 animal facts will amaze you. A Point of Sale (POS) system is a system for managing the sales of retail goods. The term is used to refer to the software and hardware associated with check out stands, and all of the bundled features which are included.he most basic POS computer system is an electronic cash register. The clerk can ring up goods in the cash register and produce a receipt for the customer. At the end of the day, various cash register functions can be used to print out daily reports that are used to reconcile the cash register and to prepare a deposit.