Which of the following is an appropriate explanation of a general purpose computer that
is also known as a mainframe?
a) It is an ultra-small computer in which the CPU, main memory, and interface circuits
are embedded in a single chip.
b) It is a large computer that is used for a wide range of applications from office
processing to technical calculations, including mission-critical business as the main
target.
c) It is a client-dedicated computer that is equipped only with the minimum functions,
such as data entry and display, in the configuration of a system where resources,
such as the application programs and files, are managed at the server side.
d) It is a portable information terminal where functions, such as schedule management,
address book, and e-mail, are made available in a device that is small enough to fit
into the palm of one’s hand.