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parallel presence detect (PC) (PPD)

When a computer boots, it must detect the configuration of the memory.

For many years, Parall Presence Detect( PPD) was the common way to obtain the desired information. PPD used separate pins for each bit of information and was used equally on Single Inline Memory Modules( SIMM) and Dual Inline Memory Modules( DIMM). However, the flexibility of the process was unsatisfactory for newer memory devices. For this reason, the Joint Electron Device Engineering Council( JEDEC) defined the new Serial Presence Detect( SPD) standard.

Informations:
Englisch: parallel presence detect (PC) - PPD
Updated at: 14.10.2013
#Words: 83
Links: computer, configuration (CFG), memory, postscript printer description (PPD), information
Translations: DE
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