detect$20687$ - translation to greek
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detect$20687$ - translation to greek

STANDARDIZED WAY TO AUTOMATICALLY ACCESS INFORMATION ABOUT A MEMORY MODULE
Enhanced Performance Profiles; Extreme Memory Profile; EXtreme Memory Profile; Presence detect; Serial Presence Detect; DOCP; EOCP
  • Memory device on an [[SDRAM]] module, containing ''SPD'' data (red circled)

detect      
v. ανακαλύπτω, διακρίνω, ανιχνεύω

Definition

presence detect
<storage> A means of identifying a memory chip to the memory controller logic. The original scheme, called Parallel Presence Detect (PPD) used a separate pin for each bit of information. As the number of pins can not be very large this only allowed to identify the density and the speed of the chips. To allow for additional information the Serial Presence Detect (SPD) scheme was introduced which uses a serial EEPROM to store the presence detect information and requires only two pins (one for enabling it and one for data). (1998-03-07)

Wikipedia

Serial presence detect

In computing, serial presence detect (SPD) is a standardized way to automatically access information about a memory module. Earlier 72-pin SIMMs included five pins that provided five bits of parallel presence detect (PPD) data, but the 168-pin DIMM standard changed to a serial presence detect to encode much more information.

When an ordinary modern computer is turned on, it starts by doing a power-on self-test (POST). Since about the mid-1990s, this process includes automatically configuring the hardware currently present. SPD is a memory hardware feature that makes it possible for the computer to know what memory is present, and what memory timings to use to access the memory.

Some computers adapt to hardware changes completely automatically. In most cases, there is a special optional procedure for accessing BIOS parameters, to view and potentially make changes in settings. It may be possible to control how the computer uses the memory SPD data—to choose settings, selectively modify memory timings, or possibly to completely override the SPD data (see overclocking).