What category of computer supports hundreds or thousands of users simultaneously?

Mainframe computers are designed to handle and support hundreds or even thousands of users at the same time. They are powerful machines that can manage vast amounts of data and run large-scale applications, which makes them ideal for organizations that require high-level processing capabilities and reliability for heavy workloads.

Mainframes are utilized in industries such as banking, finance, and government where there is a need for processing large databases and transactions concurrently. Their architecture allows for multiple users to access the system simultaneously without impacting performance, which is a significant advantage over other types of computers.

Microcomputers, minicomputers, and personal computers, on the other hand, are typically suited for single users or small groups of users. They are not built to manage the extensive demands that multiple simultaneous users impose on processing power and memory.