A Binary Code activity and worksheet for CS0 students. Part of the CUNY CS04All project

Domanski, Robert J

English

City University of New York

City University of New York (CUNY)CUNY Academic WorksOpen Educational Resources College of Staten Island2019Activity - Binary CodeRobert J. DomanskiCity University of New York - Graduate Center, rdomanski@hotmail.comHow does access to this work benefit you? Let us know!Follow this and additional works at: https://academicworks.cuny.edu/si_oersPart of the Computer Sciences CommonsThis Activity or Lab is brought to you for free and open access by the College of Staten Island at CUNY Academic Works. It has been accepted forinclusion in Open Educational Resources by an authorized administrator of CUNY Academic Works. For more information, please contactAcademicWorks@cuny.edu.Recommended CitationDomanski, Robert J., "Activity - Binary Code" (2019). CUNY Academic Works.https://academicworks.cuny.edu/si_oers/3    © 2019 by Robert Domanski. This OER material was produced as a result of the CS04ALL CUNY OER project, and is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License. Activity:  Binary Code   Learning Objectives  Students will be able to: • Transcribe text into binary code, and vice versa • Make use of ASCII Tables • Describe multiple applications of binary systems    At the heart of all modern computing is the binary system, comprised of 0s and 1s.  All software, digital music, images, video, email messages, documents and more are really just made up of 0s ad 1s  - at least as the computer understands them.  Binary code is so important because the circuits in a computer’s processor are made up of billions of transistors that switch to “0” (off) or “1” (on) depending on the electrical signals it receives. It is through these electrical signals that humans are able to give a computer instructions.  It’s truly amazing what can be communicated simply through 0s and 1s.  An extremely common way of applying the binary system is through text. Each letter and character on your keyboard has a number value (called its “decimal value”), and that number can be converted into 0s and 1s using simple addition.  For example, the letter “A” has a number, or decimal, value of 65. And for us to convert that 65 into binary 0s and 1s, we can use the following table:            128 64 32 16 8 4 2 1  We need to find the combination of values in the bottom row that add up to 65. Then, we place a “1” for each of the values we need, and a “0” for each value that we do not.  0 1 0 0 0 0 0  1  128 64 32 16 8 4 2 1      © 2019 by Robert Domanski. This OER material was produced as a result of the CS04ALL CUNY OER project, and is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License. Those vales in the bottom row never change. Thus, in this example, if we add up all of the values in the bottom row with a corresponding “1”, then 64 + 1 = 65. Therefore, the letter “A” is represented in binary as 01000001.  We knew that “A” had a value of 65 because the following “ASCII table” – which nearly all computers use - shows the decimal value of every character (you can ignore the middle column labeled “HEX” for now):      1. ASSIGNMENT:  Using the attached Worksheet, write your name in binary.  2. ASSIGNMENT:  Working with a partner, discover something that you both might have in common. Then come up with a team name for yourselves. Then write down your team name in binary on the second     © 2019 by Robert Domanski. This OER material was produced as a result of the CS04ALL CUNY OER project, and is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License. Worksheet. When finished, trade your worksheet with that of another team’s, and figure out each others’ team names.  3. There are many other binary systems that use a “presence-and-absence” logic. For example, the light switch in your bedroom that turns on and off, or Morse Code which can communicate non-digital messages (electricity is not required).  Perform research online to discover three other types of binary systems and describe how each of them works.         © 2019 by Robert Domanski. This OER material was produced as a result of the CS04ALL CUNY OER project, and is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License. Binary Code Worksheet   VALUES  A 65 B 66 C 67 D 68 E 69 F 70 G 71 H 72 I 73 J 74 K 75 L 76 M 77 N 78 O 79 P 80 Q 81 R 82 S 83 T 84 U 85 V 86 W 87 X 88 Y 89 Z 90                 TEXT:   __________________________________________________________            128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1    ANSWER          © 2019 by Robert Domanski. This OER material was produced as a result of the CS04ALL CUNY OER project, and is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License. Binary Code Worksheet   VALUES  A 65 B 66 C 67 D 68 E 69 F 70 G 71 H 72 I 73 J 74 K 75 L 76 M 77 N 78 O 79 P 80 Q 81 R 82 S 83 T 84 U 85 V 86 W 87 X 88 Y 89 Z 90                 TEXT:   __________________________________________________________            128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1             128 64 32 16 8 4 2 1    ANSWER      

Activity - Binary Code

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Activity - Binary Code

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