lab2eecs140

lab2eecs140 - Introduction: In this lab, we implemented and...

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Introduction : In this lab, we implemented and tested a 4-bit binary counter circuit. This lab builds on the other pieces of the PCB board we have already built, moving toward the final product that we will be able to see as a word. We used our knowledge of testing with the oscilloscope which we learned in a previous lab. Background Information : “…a 4 bit binary counter … cycle [s] through all the entries in a four (4) variable truth table… In the name “74LS161,” the 74LS prefix indicates the implementation technology (TTL if you’re curious), and the 161 suffix tells us that this device is a counter…. This circuit is a typical 4-bit counter that counts input pulses on the CLK (clock) pin. On receiving each pulse the value stored in the counter increments by 1 and output via pins QA through QD. Thus, the 4-bit counter’s outputs follow the sequence 0000->0001->0010->…->1110->1111->0000….When binary 15 is reached, the counter goes back to binary 0. In addition to counting, this circuit has features that allow
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lab2eecs140 - Introduction: In this lab, we implemented and...

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