| A | B |
|---|
| Asynchronous SRAM | Does not work in step with CPU clock |
| Bank | Location on the motherboard that contains slots for memory modules |
| Burst EDO(BEDO) | A refined version of EDO, offers improved access time |
| Burst SRAM | Data sent in a two step process |
| CAS Latency | Reflects the number of clock cycles that pass while written to memory |
| COAST (Cache on a Stick) | Available to hold additional 256k of memory |
| Conventional memory | The first 640k of memory addresses |
| C-RIMM (continuity RIMM) | If RIMM socket does not hold a RIMM chip it has one of these, also known as Concurrent RIMM |
| Direct Rambus DRAM | RAM named after the company Rambus inc. |
| Direct RDRAM | Data on this chip can travel 16- or 32-bits on a data path |
| Double Data Rate SDRAM (DDR SDRAM) | Runs twice as fast as regular SDRAM and holds up to 2GB of RAM |
| Dynamic RAM (DRAM) | Type of memory module that refreshes every few milliseconds |
| Error Correcting Code (ECC) | Can detect and correct errors on a single bit |
| Extended Data Out (EDO) | Used on motherboards rated from 33 to 75MHz |
| Electrically Erasable Programmable ROM (EEPROM) | Higher voltage is applied to pin to erase its previous memory before a new instruction set is electronically written |
| Erasable Programmable ROM (EPROM) | Has a special window where ultraviolet light can erase the current memory contents |
| Fast Page Mode (FPM) | Used on motherboards ranged at about 16 to 66MHz |
| General Protection Fault (GPF) | Poor quality memory can cause errors in Windows, applications, and can cause system to hang |
| High Memory Area (HMA) | The first 64k of extended memory |
| Non-Parity memory | If SIMM has even number of chips |
| Parity | An error checking procedure in which either every byte has an even number of 1s or odd number of 1s |
| Parity memory | If SIMM has odd number of chips |
| Pipelined Burst SRAM | Type of memory module that uses more clock cycles per transfer than does Burst SRAM |
| RDRAM | Also known as Direct Rambus DRAM and can travel on 16- or 32-bit data path |
| Refresh | Rewriting data to a chip every few milliseconds |
| Remarked Chips | If you can scratch of mark with finger nail or knife |
| SDRAM2 | Also known as Double Data Rate SDRAM |
| Static RAM (SRAM) | Type of memory module that can hold data as long as the system is on |
| Synchronous DRAM (SDRAM) | Type of memory module that can be powered by 3.3 or 5.0 volts of power |
| Synchronous SRAM | Type of memory module that requires a clock signal to be managed or synchronized |
| SyncLink DRAM (SLDRAM) | Type of memory module that was created by 12 manufacturers of DRAM |
| Upper Memory | Memory addresses from 640k to 1024k |
| Upper Memory Block (UMB) | Group of consecutive memory addresses that has had physical memory assigned to it. |
| MEM Command | Determines amount of memory a device driver allocates for itself and its data |
| Load High (LH) | Using LH command from Autoexec.bat |
| Extended Memory | Memory above 1024k |
| DeviceHigh= | Command that loads device 'high' |
| A:\> Edit Config.sys | Command that makes Drive A the default drive |
| C:\> Edit A:Config.sys | Command that makes Drive C the default drive instead of Drive A |
| Himem.sys | File that is a device driver for all the memory above 640k |
| Emm386.exe | File that has device drivers to load into high memory |
| VideoBIOS | File placed in the first 640k to 768k memory half |
| Upper Memory | 384k above Conventional Memory |
| Memory Mapping | Assigning of addresses to ROM or RAM |
| DOS=HIGH | Command that loads DOS core 'HIGH' |
| DOS=UMB | Command that creates upper memory blocks |
| Noems Switch | Tells Windows not to create any simultaneous expanded memory |
