IT Vocab PC 5 Flashcards
A form of embedded flash memory widely seen in mobile devices
eMMC
RAM Stick with RAM chips soldered to both sides of the stick. May only be used with motherboards designed to accept.
double-sided RAM
RAM without a buffer chip; in other words, normal, consumer-grade RAM
unbuffered RAM
Chip that handles memory requests from the CPU. Although once a special chip, it has been integrated into the chipset or CPU
memory controller chip (MCC)
Method of error detection where a small group of bits being transferred is compared to a single parity bit set to make the total bits odd or even. Receiving device reads the bit and determines if the data is valid based on the oddness or evenness of the bit
parity
Memory that can be accessed at random–that is, memory that you can write to or read from without touching the preceding address
RAM
Type of SDRAM that sends 4 bits of data in every clock cycle
DDR2
Special software, embedded on hard drives, that constantly scans the drives for bad sectors
error correction code (ECC)
Speed at which a CPU executes instructions, measured in MHz or GHz
Clock cycle
Circuitry used on video cards that support analog monitors to convert the digital video data to analog
RAMDAC
Feature similar to dual-channel RAM, but requiring four sticks instead of two
quad-channel architecture
Memory that must have constant electricity to retain data
volatile
Unit of 8 bits; fundamental data unit of personal computers. Storing the equivalent of one character
bytes
The process of keeping files on mobile devices up to date with the versions on desktops computers or over the internet
Sync
Using two sticks of RAM to increase throughput
dual-channel architecture
Expansion card that works with the CPU to produce the images displayed on your display
video card
Generic name for a single physical SIMM or DIMM
stick
Ultra-low-voltage version of DDR3
DDR3U
Type of SDRAM that transfers data twice the rate of DDR2 SDRAM
DDR3
Memory used to store data in most personal computers; stores each bit in a “cell” composed of a transistor and a capacitor
dynamic random access memory
Form of DDR, DDR2, and DDR3 memory access used by many motherboards that requires low identical sticks of memory
dual-channel memory
RAM that uses special chips to detect and fix memory errors. Commonly used in high-end servers where data integrity is crucial
ECC RAM
Set of wires leading from the CPU to the memory controller chip that enables the CPU to address RAM
address bus
A chipset feature similar to dual-channel RAM, but requiring three matched sticks instead of two
triple-channel
Type of SDRAM that offers higher density and lower voltages that DDR3 and can handle faster data transfer rates
DDR4
low-voltage version of RAM. Provides cost savings in large deployments, such as a data center
DDR3L
