Fundamentals_of_Digital_Electronics

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Unformatted text preview: ....................................6-3 8-Bit Binary Counter (with and without Reset).............................................6-5 Summary ........................................................................................................6-5 Lab 6 Library VIs ..........................................................................................6-6 Lab 7 Digital-to-Analog Converter What is a DAC? .............................................................................................7-1 ALU Simulator ..............................................................................................7-3 Simulating a Real DAC Chip.........................................................................7-4 Waveform Generators....................................................................................7-5 Special DACs.................................................................................................7-6 Lissajous Figures ...........................................................................................7-7 Lab 7 Library VIs ..........................................................................................7-8 Lab 8 Analog-to-Digital Converters, Part I Purpose of the Analog-to-Digital Converter..................................................8-1 The Ramp ADC .............................................................................................8-2 Tracking ADC................................................................................................8-4 Lab 8 Library VIs ..........................................................................................8-6 Lab 9 Analog-to-Digital Converters, Part II SAR Simulation .............................................................................................9-3 Summary ........................................................................................................9-4 Lab 9 Library VIs ..........................................................................................9-4 Fundamentals of Digital Electronics iv National Instruments Corporation Contents Lab 10 Seven-Segment Digital Displays Seven-Segment Display .................................................................................10-1 Lab 10 Library VIs ........................................................................................10-5 Lab 11 Serial Communications Serial Transmitter ..........................................................................................11-2 Voltage to Serial Transmitter.........................................................................11-4 Lab 11 Library VIs ........................................................................................11-5 Lab 12 Central Processing Unit Operation of the Arithmetic and Logic Unit..................................................12-2 The Accumulator ...........................................................................................12-3 Addition .........................................................................................................12-4 Binary Counter...............................................................................................12-5 Lab 12 Library VIs ........................................................................................12-6 National Instruments Corporation v Fundamentals of Digital Electronics Introduction Digital electronics is one of the fundamental courses found in all electrical engineering and most science programs. The great variety of LabVIEW Boolean and numeric controls/indicators, together with the wealth of programming structures and functions, make LabVIEW an excellent tool to visualize and demonstrate many of the fundamental concepts of digital electronics. The inherent modularity of LabVIEW is exploited in the same way that complex digital integrated circuits are built from circuits of less complexity, which in turn are built from fundamental gates. This manual is designed as a teaching resource to be used in the classroom as demonstrations, in tutorial sessions as collaborative studies, or in the laboratory as interactive exercises. The order of the labs follows most electronic textbooks. The first six labs cover the fundamental circuits of gates, encoders, binary addition, D-latches, ring counters, and JK flip-flops. Many of the VIs are suitable for both classroom demonstration and laboratory exploration. The second set of six labs cover advanced topics such as DACs, ADCs, seven-segment displays, serial communication, and the CPU. These are best done in the context of a digital electronics lab, comparing the LabVIEW simulations with real integrated circuits. In each case, you can enhance simulations presented in the text by using a National Instruments DAQ board to interact with the real world through LabVIEW digital I/O, analog out, analog in, and serial VIs. Labs 2, 5, and 12 are application oriented and are designed to demonstrate encoding schemes, digital encryption, and the operation of a CPU. These labs could be presented as...
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