http://128.163.144.147/ee/courses/ee481/labs/lab5/lab5.htm
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IBM Compatible Parallel Port Interfacing 
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EE481 Logical Design Lab 
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Prelab Questions
1.Describe implementation and application differences of 74373 and 74374 chips.
Why (or where) would you choose one over the other? 
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interesting similarity, but not with kernelspace device drivers, etc..
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