Practical Digital Electronics for Technicians

Preface List of Practical Exercises 1 Setting the Scene Introduction Analog and Digital Signals The Practical Exercises The Pulse Circuit Diagrams 2 Logic Gates Types of Logic Gate The AND Gate The OR Gate The NOT Gate The NAND Gate The NOR Gate Exclusive OR and Exclusive NOR Gates Logic Gate Packages Logic Rules and Theorems 3 Combinational Logic Problem Solving Derivation of the Logic Statement from the Truth Table The use of Pulses as Input Signals The Traffic Light System 4 Karnaugh Mapping The Karnaugh Map The Two-Variable Map A Simplification The Three-Variable Karnaugh Map The Four-Variable Karnaugh Map Don't Care/Can't Happen States Static Hazard 5 Logic Families The Three Types of Family TTL CMOS ECL Characteristics of Logic Families Supply Voltage Logic Levels Propagation Delay Fan-In and Fan-Out Noise Margin Power Dissipation Speed-Power Product TTL Logic The Basic TTL Circuit The Standard TTL NAND Gate with Totem Pole Output The Open Collector Gate The Wired AND/OR Gate Sourcing and Sinking The Pull-up Resistor CMOS Logic The CMOS NOT Gate The CMOS NOR Gate The CMOS NAND Gate The ECL OR/NOR Gate Interfacing Interfacing CMOS to TTL Interfacing TTL to CMOS The Schottky Diode Schottky TTL 6 Sequential Systems (1): Flipflops The Bistable Condition The Latch Bistable (or Flipflop) Circuits The RS Flipflop The Clocked RS Flipflop The D-Type Flipflop The JK Flipflop The Master-Slave JK Flipflop 7 Sequential Systems (2): Counters and Shift Registers Counters The Three-Bit Asynchronous Counter The Three-Bit Synchronous Counter The Four-Bit Synchronous Counter Shift Registers The Serial Load Shift Register PISO and PIPO Shift Registers The Universal Shift Register8 Schmitt Triggers and Multivibrators The Schmitt Trigger Multivibrators Main Categories of Multivibrator 9 MSI Combinational Logic Circuits Multiplexers Demultiplexers The Data Transmission System Encoders Decoders Code Converters Adders 10 Display Devices The Light-Emitting Diode (LED) LED as Indicators The Seven-Segment Display The Decoder/Driver The Seven Segment Display with Counter and Latch The Liquid Crystal Display (LCD) The Dot Matrix Display A Final Word on LED Devices 11 Analog and Digital Conversion Digital-to-Analog Converters (DACS) The Binary Weighted Type The R-2R Ladder Network Analog-to-Digital Converters (ADCS) The Counter-Ramp Type Alternative Types of ADC 12 Fault Finding Analog Fault Finding Compared with Digital Fault Finding Typical Faults The Procedures Some Examples of Fault Conditions Equipment for Digital Fault Finding The Logic Probe The Logic Puiser The Logic Monitor The Current Tracer The Logic Analyses Answers to Questions Index