The category of computer that is next smallest after a mainframe is a minicomputer. After that you have the microcomputer which is the proper name for what we know as a PC.
They are called Mid-range Servers.
(understanding Computers: Today and Tomorrow text book)
A mainframe computer is a large computer system that use to be manufactured. The historic demise of the mainframe computer began in the late 1980s when manufactures began making smaller models.
Mainframe computers have large memory storage. While minicomputers have small or less memory storage than mainframe computer. ... The processing speed of mainframe computer is faster than minicomputer. While the processing speed of minicomputer is slower than mainframe computer.
a main frame computer is a large-scale computers but a super computer are larger than mainframe while a mini computer is smaller in size, have lower processing speed and also have lower cost than mainframe computers.
They are large in size, processes of power and high level of reliability , amount of storage , mainframe have ability to run multiple operating system. they are designed to handle very high volume input and output and a single mainframe can replace dozens or even hundreds of smaller severs.
More than one user can use the mainframe at once.
a mainframe is a high performance computer used for large-scale computing purposes that require greater availability and security than a smaller-scale machine can offer.
The mainframe computer is usually used in a computer center to connect the other computers. The mainframe computer is a high level computer that is designed for demanding and extensive computer tasks.
Douglas Engelbart did not invent the mainframe computer.
it is used as a thing that has less mermory than a mainframe
A mainframe computer is a big computer. You probably wrote your question using a desk top or lap top computer. A computer larger than that is a mini computer. There are computers larger than that called mainframes. Mainframe computers have the power of thousands of desktops. A bank would have one to keep track of customers' accounts, loans, and other business. They would use a second one for backup.
A mainframe is just a physically very large computer, it is programmed no differently than minicomputers and microcomputers. All computers were mainframe computers before the early 1960s (because of the size of vacuum tubes and the first discrete transistors), when discrete transistors and then integrated circuits made possible the smaller minicomputers. In 1971 Intel introduced the microprocessor integrated circuit making the even smaller microcomputers possible.
The mainframe of computer is counting "0" and "1". The computer just counts these numbers and the user does everything with it.