Mainframe

Mainframes are computers in which all the processing is done centrally, and the user terminals are called "dumb terminals" since they only input and output (and do not process). In modern systems, a PC or a web app often acts as the dumb terminal. Mainframes are computers used mainly by large organizations for critical applications, typically bulk data processing such as a census. Examples: banks, airlines, insurance companies, and colleges. They support hundreds of users simultaneously.
At SRU, the mainframe handles registration, records, reports, and various Human Resource functions. You are much more likely to use a mainframe in your professional career (today) than a supercomputer.