What are Mainframe Computers?
Widely used in large industries for controlling processes, maintaining networks, and allowing shared resource access. Known for multi-processing capabilities (though generally limited to eight or fewer processors), speed measured in megaflop, and supporting hundreds of simultaneous users. Examples: IBM-3000 series, IBM 4300, IBM 3090, IBM 308 X, HP 9000 – 8705/400, VAX 8852.
What are Minicomputers?
Started in the 1960s with the release of the DEC PDP-8 minicomputer in 1968. Like mainframes, they are multiuser and general-purpose. Slower than mainframes even when performing similar tasks. Example: PDP series.
What are Microcomputers?
Commonly used at homes, schools, banks, offices, and supermarkets. Originally named for being lower in power, but their power has increased massively over time. Contain a single microprocessor chip for operations. Examples: IBM Personal Computers, Apple Macintosh.
What is a Laptop?
A portable computer small enough to fit into an average-sized briefcase. Offers processing power and storage comparable to microcomputers. Features a tracker ball or touch LCD screen for display and a battery for power backup. Uses the same software as a personal computer, allowing work anywhere.
What is a Tablet?
Uses a touch screen for input, eliminating the need for an external mouse and keyboard. A portable, wireless personal computer, commonly ranging from 7″ to 10″ in size. Includes an inbuilt microphone, camera, and speakers. Uses a virtual keyboard for typing.