Business executives need a wide variety of skills to perform their jobs, but the route to becoming an executive can take a wide variety of paths. Preparation for executive positions usually includes business courses such as accounting, marketing, management, human relations and technical classes in the field of the business.
The Cavitron Ultrasonic Surgical Aspirator (CUSA) is a dissecting device that uses ultrasonic frequencies to fragment tissue. This highly-specialized instrument is available at only a handful of veterinary universities and human hospitals that focus on neurosurgery.
An abacus is a counting device that uses beads on a table or string that represent numbers.bacus is not like the modern electronic calculators that perform all of the functions of their own and then present the result in an electronic form on their screens. It is rather a tool that helps in counting the numbers with the help of reference in its beads.