- Cover image
- Title page
- Table of Contents
- Dedication
- Copyright
- Preface
- Part 1: Transducers
- Part 2: Interfacing
- Introduction to Interfacing
- Chapter 2.1: Number systems
- 2.1.1 Binary number system
- 2.1.2 Decimal to binary conversion
- 2.1.3 Hexadecimal
- 2.1.4 Decimal to hex conversion
- 2.1.5 2’s complement
- 2.1.6 Signed numbers
- 2.1.7 Subtraction and multiplication
- 2.1.8 Binary coded decimal (BCD)
- 2.1.9 Gray code
- 2.1.10 ASCII code
- 2.1.11 Boolean algebra
- 2.1.12 Digital logic circuits
- 2.1.14 Activities
- Chapter 2.2: Computer architecture
- 2.2.1 Computer architecture
- 2.2.2 Memory
- 2.2.3 Segmented memory
- 2.2.4 Memory data
- 2.2.5 Buffers
- 2.2.6 Latches
- 2.2.7 Flip-flop
- 2.2.8 Input/Output (I/O)
- 2.2.9 Microprocessor unit (MPU/CPU)
- 2.2.10 Registers
- 2.2.11 ROM
- 2.2.12 Interrupts
- 2.2.13 Memory map
- 2.2.14 Real and protected mode CPU operation
- 2.2.16 Activities
- Chapter 2.3: Assembly language
- 2.3.1 Instruction set
- 2.3.2 Assembly language
- 2.3.3 Program execution
- 2.3.4 Assembly language program structure
- 2.3.5 Assembler directives
- 2.3.6 Code segment
- 2.3.7 Assembly language shell program
- 2.3.8 Branching
- 2.3.9 Register and immediate addressing
- 2.3.10 Memory addressing
- 2.3.11 Indirect memory addressing
- 2.3.12 Indexed memory addressing
- 2.3.14 Interrupts
- 2.3.16 Activities
- Chapter 2.4: Interfacing
- 2.4.1 Interfacing
- 2.4.2 Input/Output ports
- 2.4.3 Polling
- 2.4.4 Interrupts
- 2.4.5 Direct memory access (DMA)
- 2.4.6 Serial port
- 2.4.7 Serial port addresses
- 2.4.8 Serial port registers
- 2.4.9 Serial port registers and interrupts
- 2.4.10 Serial port baud rate
- 2.4.11 Serial port operation
- 2.4.12 Parallel printer port
- 2.4.13 Parallel port registers
- 2.4.14 Parallel printer port operation
- Chapter 2.5: A to D and D to A conversions
- 2.5.1 Interfacing
- 2.5.2 The Nyquist criterion
- 2.5.3 Resolution and quantisation noise
- 2.5.4 Oversampling
- 2.5.5 Analog to digital converters
- 2.5.6 ADC (integrating method)
- 2.5.7 ADC (successive approximation)
- 2.5.8 Aperture error
- 2.5.9 ADC08xx chip
- 2.5.10 Sample-and-hold
- 2.5.11 Sample-and-hold control
- 2.5.12 Digital to analog conversion
- 2.5.13 DAC0800
- 2.5.14 Data acquisition board
- Chapter 2.6: Data communications
- 2.6.1 Communications
- 2.6.2 Byte to serial conversion
- 2.6.3 RS232 interface
- 2.6.4 Synchronisation
- 2.6.5 UART (6402)
- 2.6.7 Line drivers
- 2.6.8 UART clock
- 2.6.9 UART Master Reset
- 2.6.10 Null modem
- 2.6.11 Serial port BIOS services
- 2.6.12 Serial port operation in BASIC
- 2.6.13 Hardware handshaking
- 2.6.14 RS485
- 2.6.15 GPIB
- 2.6.16 USB
- 2.6.17 TCP/IP
- Chapter 2.7: Programmable logic controllers
- Chapter 2.8: Data acquisition project
- Part 3: Signal processing
- Introduction to Signal processing
- Chapter 3.1: Transfer function
- Chapter 3.2: Active filters
- 3.2.1 Filters
- 3.2.2 T –network filters
- 3.2.3 Twin-T filter
- 3.2.4 Active integrator/differentiator
- 3.2.5 Integrator transfer function
- 3.2.6 Low pass filter – active
- 3.2.7 2nd order active filter
- 3.2.8 Double integrator
- 3.2.9 Bandpass filter – narrow
- 3.2.10 Differentiator transfer function
- 3.2.11 High pass filter – active
- 3.2.12 High pass filter – ω-domain
- 3.2.13 Bandpass filter – wide
- 3.2.14 Voltage gain and dB
- 3.2.16 Activities
- Chapter 3.3: Instrumentation amplifier
- Chapter 3.4: Noise
- Chapter 3.5: Digital signal processing
- 3.5.1 Digital filters
- 3.5.2 Fourier series
- 3.5.3 Fourier transform
- 3.5.4 Sampling
- 3.5.5 Discrete Fourier transform
- 3.5.6 Filtering
- 3.5.7 Digital filtering (ω-domain)
- 3.5.8 Convolution
- 3.5.9 Discrete convolution
- 3.5.10 Digital filtering (t-domain)
- 3.5.11 Example
- 3.5.12 Smoothing transfer function
- 3.5.14 Activities
- Index
- Further reading
- Parts lists
Introduction to Interfacing
2.0 Interfacing
It is common practice to use a computer to record measurements from a transducer. Transducers generally provide an analog signal that must be converted to digital format for data storage and analysis. The connection between the transducer and the computer is called the computer interface.
In Part 1 of this book, we are mainly interested in transducers.
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