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RAMs_ Coincident Decoding - Row decoder has size 8-to 2^8 =...

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Mallard ECE 290: Computer Engineering I - Spring 2007 - Graded Web... https://mallard.cites.uiuc.edu/ECE290/webgrade.cgi?SessionID=mding3... 1 of 2 3/27/2007 1:20 AM Graded WebQuiz: RAMs: Coincident Decoding You have submitted this WebQuiz 1 time (including this time). You may submit this WebQuiz a total of 10 times and receive full credit. Comments: If the row and column decoders cannot be the same size, then let the row decoder be (one size) larger. An address is specified in order of row first, then column. You may wish to use a calculator to determine the column and row selection lines. Choose row and column decoder sizes so that the cell array is square. For example, a 32 x 2 RAM chip consists of 64 cells and the cell array has size 8 x 8. A 32K x 2 RAM chip uses coincident decoding by splitting the internal decoder into row select and column select. Assuming that the RAM cell array is square, what is the size of each decoder?
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Unformatted text preview: Row decoder has size 8 -to- 2^8 = 256 Column decoder has size 7 -to- 2^7 = 128 If coincident decoding had not been used, the single decoder would have had 15 inputs and 2^15 = 32768 outputs. Determine in decimal the row and column selection lines that are enabled when the input address is the binary equivalent of (11133) 10 : Row selection line = 86 Column selection line = 125 You received a raw score of 100% on this question. WebQuiz Grade Summary Raw score 100.00% Adjusted score 100.00% Minimum passing score 60.00% Grade for this submission 100% Cumulative Grade 100% Mallard ECE 290: Computer Engineering I - Spring 2007 - Graded Web. .. https://mallard.cites.uiuc.edu/ECE290/webgrade.cgi?SessionID=mding3. .. 2 of 2 3/27/2007 1:20 AM To improve a grade, you must load a new quiz: NEW Quiz Mallard Copyright © 1995-2000 Course Content Copyright© 1995-2007 Donna J. Brown. All rights reserved....
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