To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Plotters are not available for microcomputer systems - This option is incorrect because plotters are available for microcomputer systems. Plotters are output devices used to produce high-quality graphical output, such as large-scale drawings or designs.
Option B) Micro-computer are not programmed like conventional computers - This option is incorrect. Microcomputers are programmed using the same principles and techniques as conventional computers. They use programming languages and follow similar programming paradigms.
Option C) Mini-computers are task-oriented - This option is correct. Mini-computers are designed to handle specific tasks or applications. They are smaller and less powerful than mainframe computers but more powerful than microcomputers. They are often used for scientific and engineering applications or as servers in a network.
Option D) The contents of ROM are easily changed - This option is incorrect. ROM (Read-Only Memory) is a type of memory whose contents are permanently stored and cannot be easily changed. It is used to store firmware or software instructions that are required for the computer to boot up or perform initial operations.
The correct answer is C) Mini-computers are task-oriented. This option is correct because mini-computers are designed for specific tasks or applications.