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26 Cards in this Set
- Front
- Back
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What two methods can a system use to detect the type of memory installed?
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Parallel Presence Detect (PPD) or Serial Detect (SPD).
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Name a chip set feature on the system board that checks the integrity of data stored on DIMMs and can correct single-bit errors in a byte.
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ECC - Error checking and correction
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Which memory detection scheme uses resistors to communicate the type of memory installed?
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Parallel Presence Detect (PPD).
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What happens to data in RAM when the PC is turned off?
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All data in RAM is lost when the PC is turned off.
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What is the data path size for Direct Rambus DRAM?
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16 Bits.
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what is "Conventional Memory"?
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The memory adresses between 0 and 640K.
Also called BASE memory. |
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How many pins are there on the edge connector of a DIMM?
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DIMMS have 168 pins on the edge connector.
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RAM is divided into what two categories?
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Static RAM (SRAM) and Dynamic RAM (DRAM)
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What is the Upper Memory Block?
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A group of consecutive memory addresses in RAM from 640K up to 1024K that can be used by device drivers and TSR's
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True or False:
Expansion cards can have RAM and ROM on them. |
True
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How many pins are there on the edge connector of a SIMM?
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Older SIMMS use 30 pins, newer SIMMS use 72 pins on the edge connector.
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What is another name for DDR SDRAM?
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SDRAM II
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What is the data path size of a DIMM?
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The data path size of a DIMM is 64 bits.
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What is Asyncronous SRAM?
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Static RAM that does not work in step with the CPU clock.
Slower than syncronous SRAM. |
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The assigning of addresses to RAM and ROM during boot up is called what?
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Memory Mapping.
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Computer memory is divided into what two categories?
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RAM and ROM
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True or False:
A system board can support both syncronous and asyncronous SRAM, but not at the same time. |
TRUE
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What is a BUFFER?
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A temporary memory area where data is stored before being written to a printer or disk drive.
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What is the data path size for a SIMM?
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A SIMM has a data path of 32 bits.
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what is the memory above the initial one Megabyte called?
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Extended memory
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Why is it called "Dynamic" RAM?
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Because it constantly needs refreshing.
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What is a BANK?
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An area on the motherboard that contains slots for memory modules. Typically labeled bank 0,1,2 and 3.
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What kind of memory can hold data even when the power is turned off?
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Flash memory
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What type of ROM can be erased using UV light?
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EPROM
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What is DDR SDRAM?
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Double Data Rate syncronous dynamic ram - A type of memory used on DIMMS that runs at twice the speed of the system clock.
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What is an EEPROM?
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Electrically erasable programmable ROM.
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