projects:mechanical_logic_from_common_materials
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projects:mechanical_logic_from_common_materials [2013/12/18 20:18] cjoyce |
projects:mechanical_logic_from_common_materials [2013/12/18 20:29] (current) cjoyce |
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| + | ====== Abstract ====== | ||
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| + | For our Computer Architecture final, we (Chris Joyce and Brendan Ritter) created mechanical logic gates as part of a lesson plan on computers for middle-school aged children. Detailed instructions on how to build the gates described in this document can be found at the bottom of the page. | ||
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| ====== Documentation ====== | ====== Documentation ====== | ||
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| We made our gates combining the above materials and puzzling over them for several days until we were able to come up with basic, robust, and repeatable logic gates. | We made our gates combining the above materials and puzzling over them for several days until we were able to come up with basic, robust, and repeatable logic gates. | ||
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| + | ==== Not Gate ==== | ||
| + | A **zero** for a NOT gate is the input stick fully out. This causes the reciprocating linkage to push the output forward, creating a **one**. | ||
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| + | Similarly, when the input is pushed forward in a **one**, the linkage transmits the forward motion into rotational motion and out again as backwards motion on the output, causing a **zero** for output. | ||
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| + | ==== Or Gate ==== | ||
| + | A **zero** for either input to the OR gate does nothing so the output is pulled back to make a **zero** also. | ||
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| + | Similarly, when either input is pushed forward in a **one**, the input stick pushes the bar forward, causing the output to also be pushed forward as a **one** also. | ||
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| + | ==== And Gate ==== | ||
| + | If both inputs to the AND gate are **one**, the rubber band pulls the bar forward making output a **one**. | ||
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| + | If either of the inputs is **zero**, the stop at the end of the input stick pulls back the bar connected to the output, dragging it against the rubber band to make a **zero**. | ||
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| We used the Olin principle of spiral learning pretty heavily, because it became pretty clear early that we didn’t really know what we were doing -- so we tried, failed, and tried again. | We used the Olin principle of spiral learning pretty heavily, because it became pretty clear early that we didn’t really know what we were doing -- so we tried, failed, and tried again. | ||
projects/mechanical_logic_from_common_materials.1387415907.txt.gz · Last modified: 2013/12/18 20:18 by cjoyce
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