Week 5 Binary Number Review The Human Computer

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This week we review binary conversion and addition. Students also constuct "The Human Computer".

Teacher Notes - Time: 10 Minutes

Convert the 5 bit binary numbers to decimal numbers Add the two 4 bit binary numbers and convert the question to decimal numbers Bonus questions: -Convert the 7 bit binary numbers to decimal numbers -Convert the decimal numbers to binary numbers -Add the two 5 bit binary numbers and convert the question to decimal numbers -Add the two 6 bit binary numbers and convert the question to decimal numbers

Blackboard Notes

Teacher Notes - Time: 55 Minutes

Construct the “human computer” according to the circuit below to add two 2 bit binary numbers -hand out the switch labels and answer bit labels to the class (20 switches + 3 answer bits) -line everyone up so that people with no input are first, followed by each input/output pair in line (each label identifies the input and output connections) -each regular switch should be ON (arms forward and backward) if the specified bit is ‘1’ and OFF (arms left and right) if the specified bit is ‘0’ -each NOT switch should be OFF (arms left and right) if the specified bit is ‘1’ and ON (arms forward and backward) if the specified bit is ‘0’ -if two switches, which are in line, are both ON, then join hands to complete the circuit -if the circuit is completed to an answer bit, then that person should have joined one hand with the input and then raise the other hand indicating that the bit of the answer is ‘1’ (otherwise the bit of the answer is ‘0’) -assign people to write down the questions and answers Try as many of the following questions as there is time for:

Teacher Human Computer Circuit Diagram

Teacher Switch and Answer Lables

Homework Assignment - Time: 5 Minutes

Complete last weeks home work

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