Adapters are circuit boards that plug into computer's expansion slots and give the computer additional capabilities. SVGA cards need at least 1 megabyte of memory to operate at a higher resolution. Make sure you purchase a non-interlaced monitor. Interlacing enables the monitor to display higher resolution images at the cost of increased screen flickering. Other peripheral devices are disk drives.
Bays are where the computers disk drives are located.
A computer with a hard disk, two floppy drives, and a CD-ROM has four bays. Access time and storage capacity are important factors to consider when you plan to buy disk drives.