Lab6 - Lab 6. Binary Counter Overview of this Session In...

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Lab 6. Binary Counter Overview of this Session In this laboratory, you will learn: Continue to use the scope to characterize frequencies How to count in binary How to use an MC14161 or CD40161BE counter Introduction The TA will show you the MC14161 or CD40161BE counter and the MC14012 quad input NAND gate. Oscilloscope Measurements 6.1 Connect the signal from the function generator to the oscilloscope and determine the type of signal present, the frequency, amplitude, and the DC offset. Draw a picture of the signal on your answer sheet. Show all calculations for amplitude, period, frequency, and DC offset. Background Counting: Before starting with counters there is some vital information that needs to be understood. The most important is the fact that since the outputs of a digital chip can only be in one of two states, it must use a different counting system than you are accustomed to. Normally we use a decimal counting system; meaning each digit in a number is represented by one of 10 characters (0-9). In a binary system, there can only be two characters, 0 and 1. When counting up in a decimal system, we start with the first digit. When that digit ‘overflows’, i.e. gets above 9, we set it to 0 and add one to the next digit over. The same goes for a binary system. When the count goes above 1 we add one to the next digit over and set the first digit to 0. Here is an example. 1
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Decimal Binary 0 0 1 1 2 10 3 11 4 100 To convert a binary number to a decimal, we use a simple system. Each digit, or ‘bit’ of the binary number represents a power of two. All you need to do to convert from binary to decimal is add up the applicable powers of 2. In the example below, we find that the binary number 10110111 is equal to 183. The diagram also shows that eight bits make up what is called a byte. Nibbles are the upper or
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This note was uploaded on 04/29/2008 for the course ENGR 1310 taught by Professor Mielke during the Spring '07 term at Rensselaer Polytechnic Institute.

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Lab6 - Lab 6. Binary Counter Overview of this Session In...

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