Categories of computers
Personal computer
Computer used by one person
Divide into desktop and portable computer
Desktop computer
Portable computer
Slimline, desktop, minitower, and full tower
Laptops, notebooks and sub notebooks
Minicomputer
Small and less expensive
Less powerful than personal computer
More expensive than personal computer
More powerful than personal computer
Use a single central computer
Mainframe computer
Used mainly by large organisation
For critical application
Typically bulk data processing
census
industry and comsumer stratics
enterprise resource planning
financial transaction processing
Huge,multi-user systems
handle gigantic processing job
Supercomputers
Fastest, largest and powerful computer
operate on the order
of more
than 200 teraflops
Used to tackle complex problems
weather forecasting and model climate change