4846937\#\# Exit Assignment \( \times \) Multiple Select Question Select all that apply Which two of the following acronyms describe a type of computer monitor? ROM LED LCD CPU Medium Low raw Hill. All Rights Reserved. Privacy Center Terms of Use
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Step 1: Identify the acronyms given in the options: ROM, LED, LCD, CPU. Show more…
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6. The Commodore 64, a popular home computer in the 1980s, was able to display 320 x 200 pixels in its "hi-res" graphics mode. In this problem, and one in next week's written homework assignment, we will explore the mathematics of how the Commodore 64 stores pixels in video memory. Pixel coordinates on the screen are counted from the upper left to the lower right. This means that the upper left pixel is (0,0), the upper right pixel is (319,0), the lower left pixel is (0,199), and the lower right pixel is (319,199). The hi-res display is subdivided into cells of size 8x8 pixels, and cells are numbered consecutively, starting at zero, horizontally from left to right, then vertically from top to bottom. Observe that this means that there are 40 columns of cells, and 25 rows. The diagram illustrates the cell numbering. Suppose a pixel P with coordinates x and y is given. This means that x and y are integers with 0 ≤ x ≤ 319 and 0 ≤ y ≤ 199. Suppose p is the number of the column of the cell P is in, counting columns from left to right, starting at 0. Suppose q is the number of the row of the cell P is in, counting rows from the top down, starting at 0. Observe that this means that p and q are integers with 0 ≤ p ≤ 39 and 0 ≤ q ≤ 24. a) Express p and q in terms of x and y. b) What is the position (a,b) of P within its cell, in terms of x and y? In these relative coordinates, the top left pixel is (0,0), the bottom right pixel is (7,7). c) What is the cell number c of the cell that contains P in terms of p and q? Use the notations div and mod as needed. You do not need to give explanations here.
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