Assignment 5 Flashcards
BIOS
Contains basic input/output system for the computer. Identifies accessible devices, and contains low level routines to manage specific devices.
CMOS
Stores system information, operates the real-time clock to keep track of date and time. This memory is accessed when computer boots.
Firmware
Software that is permanently stored in ROM and specific to each motherboard. Necessary for the operation of the computer.
Nanosecond
A unit one billionth of a second. Used to measure the speed of RAM chips.
Millisecond
A unit one thousandth of a second. Used to measure the speed of RAM chips.
System clock
Clock inside computer that measures time in electric pulses at a rate measured in gigahertz.
Random Access
When cells of RAM chip are organized so all data can be accessed in equal time. RAM chips come in different speeds, which are measured in nanoseconds.
Gigahertz
Measurement that equals one billion cycles per second. Used to measure computer speed.
GT/s
Gigatransfers per second. Measurement for rate of transferring data.
SRAM
Static Random Access Memory. Uses multiple transistors, used for cache.
DRAM
Dynamic RAM. Has memory cells with paired transistor and capacitor. This requires constant refreshing.
SDRAM
Synchronous DRAM.About 5% faster than EDO, at a speed of 528 Mb/s.
RDRAM
Rambus DRAM. Used for high speed data bus. Speed of RDRAM is 800 Mb/s.
EDO RAM
Extended Data-Out RAM. EDO RAM accepts on bit, and starts to process the next. The speed is 246 Mb/s.