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RANDOM ACCESS MEMORY DIGITAL-TO-ANALOG CONVERTER

Specialty Definition: RANDOM ACCESS MEMORY DIGITAL-TO-ANALOG CONVERTER

DomainDefinition

Computing

Random Access Memory Digital-to-Analog Converter (RAMDAC) A combination of three fast DACs with a small SRAM used in graphics display adapters to store the colour palette and to generate the analog signals to drive a colour monitor. The logical colour number from the display memory is fed into the address inputs of the SRAM to select a palette entry to appear on the output of the SRAM. This entry is composed of three separate values corresponding to the three components (red, green, and blue) of the desired physical colour. Each component value is fed to a separate DAC, whose analog output goes to the monitor, and ultimately to one of its three electron guns (or equivalent in non-CRT displays). DAC word lengths range usually from 6 to 10 bits. The SRAM's wordlength is three times the DAC's word length. The SRAM acts as a colour lookup table. It usually has 256 entries (and thus an 8-bit address). If the DAC's word length is also 8 bits, we have a 256 x 24-bit SRAM which allows a selection of 256 out of 16777216 possible colours for the display. The contents of the SRAM can be changed while the display is not active (during display blanking times). The SRAM can usually be bypassed and the DACs can be fed directly by display data (for true colour modes). (1996-03-24). Source: The Free On-line Dictionary of Computing.

Source: compiled by the editor from various references; see credits.

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Crosswords: RANDOM ACCESS MEMORY DIGITAL-TO-ANALOG CONVERTER

Specialty definitions using "RANDOM ACCESS MEMORY DIGITAL-TO-ANALOG CONVERTER": RAMDAC, Random Access Memory Digital-to-Analog Converter. (references)

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Alternative Orthography: RANDOM ACCESS MEMORY DIGITAL-TO-ANALOG CONVERTER


Hexadecimal (or equivalents, 770AD-1900s) (references)

52 41 4E 44 4F 4D      41 43 43 45 53 53      4D 45 4D 4F 52 59      44 49 47 49 54 41 4C 2D 54 4F 2D 41 4E 41 4C 4F 47      43 4F 4E 56 45 52 54 45 52

Leonardo da Vinci (1452-1519; backwards) (references)

                

Binary Code (1918-1938, probably earlier) (references)

01010010 01000001 01001110 01000100 01001111 01001101 00100000 01000001 01000011 01000011 01000101 01010011 01010011 00100000 01001101 01000101 01001101 01001111 01010010 01011001 00100000 01000100 01001001 01000111 01001001 01010100 01000001 01001100 00101101 01010100 01001111 00101101 01000001 01001110 01000001 01001100 01001111 01000111 00100000 01000011 01001111 01001110 01010110 01000101 01010010 01010100 01000101 01010010

HTML Code (1990) (references)

&#82 &#65 &#78 &#68 &#79 &#77 &#32 &#65 &#67 &#67 &#69 &#83 &#83 &#32 &#77 &#69 &#77 &#79 &#82 &#89 &#32 &#68 &#73 &#71 &#73 &#84 &#65 &#76 &#45 &#84 &#79 &#45 &#65 &#78 &#65 &#76 &#79 &#71 &#32 &#67 &#79 &#78 &#86 &#69 &#82 &#84 &#69 &#82

ISO 10646 (1991-1993) (references)

0052 0041 004E 0044 004F 004D      0041 0043 0043 0045 0053 0053      004D 0045 004D 004F 0052 0059      0044 0049 0047 0049 0054 0041 004C 002D 0054 004F 002D 0041 004E 0041 004C 004F 0047      0043 004F 004E 0056 0045 0052 0054 0045 0052

Encryption (beginner's substitution cypher): (references)

52354838494723537373953532473947495259238434143543546155449153548354649412374948563952543952

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INDEX

1. Crosswords
2. Orthography
3. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.