ROM

Acronym for read-only memory. Your computer contains some programs essential to its operation in ROM code. Unlike RAM, a ROM chip retains its contents even after you turn off your computer. Examples of code in ROM include the program that initiates your computer’s boot routine and the POST.

rpm

Abbreviation for revolutions per minute.

RTC

Abbreviation for real-time clock. Battery-powered clock circuitry inside the computer that keeps the date and time after you turn off the computer.

SCSI

Acronym for small computer system interface. An I/O bus interface with faster data transmission rates than standard ports. You can connect up to seven devices to one SCSI interface.

SDMS

Abbreviation for SCSI device management system.

sec

Abbreviation for second(s).

serial port

An I/O port used most often to connect a modem or a mouse to your computer. You can usually identify a serial port on your computer by its 9-pin connector.

shadowing

A computer’s system and video BIOS code is usually stored on ROM chips. Shadowing refers to the perfor- mance-enhancement technique that copies BIOS code to faster RAM chips in the upper memory area (above 640 KB) during the boot routine.

SRAM

Abbreviation for static random-access memory. Because SRAM chips do not require continual refreshing, they are substantially faster than DRAM chips. SRAM is used mostly for external cache memory.

SVGA

Abbreviation for super video graphics array. See also VGA.

switch

See parameter.

sync negotiation

Sync negotiation is a SCSI feature that allows the host adapter and its attached SCSI devices to transfer data in synchronous mode. Synchronous data transfer is faster than asynchronous data transfer.

syntax

The rules that dictate how you must type a command or instruction so that the computer will understand it.

system board

As the main circuit board, the system board usually con- tains most of your computer’s integral components, such as the following:

Microprocessor

RAM

Expansion-card connectors

Controllers for standard peripheral devices, such as the keyboard

Various ROM chips

Frequently used synonyms for system board are mother- board and logic board.

system diskette

System diskette is a synonym for bootable diskette.

system memory

System memory is a synonym for RAM.

System Setup program

System Setup program options allow you to configure your computer’s hardware. Some options in the System Setup program require that you reboot the computer in order to make a hardware-configuration change. Because the Sys- tem Setup program is stored in NVRAM, any options that you set remain in effect until you change them again.

system.ini file

When you start Windows, it consults the system.ini file to determine a variety of options for the Windows operating en- vironment. Among other things, the system.ini file records

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Dell 2100/200, 2100/180 manual Rom, Rtc, Scsi, Sdms, Sram, Svga

2100/180, 2100/200 specifications

The Dell 2100/200 and Dell 2100/180 are innovative offerings from Dell that cater to the demands of a variety of users, ranging from small businesses to larger enterprises. Both models are designed to deliver high performance and reliability, making them indispensable tools in the modern computing environment.

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