A Mini Computer is a type of computer that is smaller and less powerful than a mainframe computer but more powerful than a personal computer. They were first introduced in the 1960s as a cheaper, more compact alternative to mainframe computers.

Mini computers are typically used for scientific and engineering applications and business and administrative tasks. They are commonly found in research institutions, universities, and small to medium-sized businesses.

Mini computers are known for their ability to handle multiple users and applications simultaneously, making them suitable for shared use. They typically have a more limited set of capabilities than mainframe computers but can still perform complex calculations and run specialized software.

In contrast to mainframe computers, mini computers are typically easier to install and maintain and require less specialized expertise to operate. They are also more cost-effective than mainframes, making them an attractive option for organizations with significant computing power but a limited budget.

Today, mini-computers have largely been replaced by servers and personal computers. However, they are still used in some specialized applications where their compact size and moderate computing power are advantageous.