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Study Guide

COMP 202- Final Exam Guide - Comprehensive Notes for the exam ( 122 pages long!)

122 Pages

Computer Science (Sci)
Course Code
COMP 202
Daniel Pomerantz

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[COMP 202] Comprehensive fall guide including any lecture notes, textbook notes and exam guides.find more resources at COMP 202 Lecture 1 September 2, 2016 Lecture 1: Course Intro Required Software Download the JDK (Java Development Kit) from: And download the development environment dr java: How Computers Store Images A computer screen is a bunch of really small lights, called pixels. Each pixel can be red, green, or blue. Any colour can be displayed, using different lights at different intensities. Note that the rules for combining colours of light are different from colours of paint. Images as Numbers Generally, we can store each pixel in an image as a `triple' of numbers, (R,G,B). The number in the first position tells us how much red `intensity' that pixel has; the second corresponds to green and the third to blue. The largest value of these numbers is usually 255 and the smallest is 0. So a 200 by 250 picture can be stored using 250x200x3 = 150000 numbers. **Computers will use as few numbers as possible to store information. Computer Programming is providing a computer with a set of instructions in order to accomplish a goal or solve a problem. These instructions must be very specific, and they must be written in a language that computers understand Computer Languages The computer takes everything you write literally. here is no room for ambiguity. The programmer must know precisely how the computer will interpret his or her statement. The computer will not ask you for additional feedback or clarification. find more resources at
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