If you are in the market for a home or personal computer, the experts all agree on one thing: know what you want the computer to do, and do not buy a computer until you thoroughly shop and test the variety of models being offered by manufacturers. The investigation can save you plenty. You should also take time to become familiar with some of the computer basics such as computer 'language' and terminology before you shop. Personal home computer owners report that the reality of using a computer can be different from what the advertisements would lead you to believe. A computer is not a panacea for all problems, but there are many things it can do. Buying a home computer is not unlike buying a car. There are the basic models and many add-on accessories. Hardware or physical equipment is called the processor unit or microprocessor and the central processor unit is called the CPU. The screen or the monitor is also called the CRT. The disk drive is where bits of information are stored in your computer. It can be a floppy disk which looks sort of like a record or a hard disk which is inside your computer and not removable. The printer is also called hardware. You may hear terms like software, which is the programs that tell the computer what to do. The modem is the component in some computers that helps your computer talk to other computers. Data-base management is the process of organizing and storing information in your computer system.