| A | B |
|---|
| Random Access Memory | Memory stored on the system board in SIMMs, DIMMs, or RIMMs. |
| RAM Cache | Memory used to speed up memory access that comes in level 1 or 2. |
| High Memory Area | Located between 1024k and 1088k and frees up conventional memory by loading part of DOS in other memory areas. |
| Conventional Memory | First 640k of memory used to load legacy drivers, part of DOS, user configurable parameters, and program/data files. |
| Upper Memory | Located from 640k to 1MB and used to load real modedevice drivers and system BIOS. |
| Extended Memory | All memory above 1024k. |
| Virtual Memory | Hard drive space that is used like RAM. |
| HIMEM.SYS | DOS memory manager that makes extended memory available to programs. |
| Dot Pitch | Distance between dots of ink on a monitor screen, measured in millimeters. |
| Pixel | smallest addressable spot on the screen. |
