a large digital computer serving 100-400 users and occupying a special air-conditioned room
(computer science) the part of a computer (a microprocessor chip) that does most of the data processing;
"the CPU and the memory form the central part of a computer to which the peripherals are attached"
- These were the so-called mainframe machines.
- These terminals are connected to our mainframe computer.
- It only uses the excess capacity of the mainframe.
- All of the information was then coded and entered into a mainframe computer.