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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Interfacing with an analog world. Part 1. How transducers work and some problems in processing their signals.
BYTE May 1977 (v.2#5) pg. 56

Designing multichannel analog interfaces.
BYTE Jun 1977 (v.2#6) pg. 18

Interfacing with an analog world. Part 2.
BYTE Jun 1977 (v.2#6) pg. 54

Controlling small DC motors with analog signals. Use to make a computer-controlled lunar lander simulation model.
BYTE Aug 1977 (v.2#8) pg. 18

A review of digital to analog conversion. Circuit for a 4 channel self-refreshing digital to analog converter. How to use BASIC to compute and represent waveforms through a converter using an oscilloscope as a display.
BYTE Sep 1977 (v.2#9) pg. 30

Simulation of motion with computers. Part 1. An improved lunar lander algorithm.
BYTE Nov 1977 (v.2#11) pg. 18

Circuit for an 8 channel 3.5-digit voltmeter built around the Motorola MC14433 3.5-digit analog-to-digital converter integrated circuit. Plugged into a minicomputer, it uses a simple program to display voltage readings on a video terminal.
BYTE Dec 1977 (v.2#12) pg. 76
Added Info BYTE Jan 1978 (v.3#1) pg. 37

Simulation of motion with computers. Part 2. An automobile suspension systems response to a varying road surface is simulated by computer programs.
BYTE Dec 1977 (v.2#12) pg. 112

Mind over matter. Add biofeedback input to your computer. Use muscle signals to produce computer input.
BYTE Jun 1979 (v.4#6) pg. 49
Added Info BYTE Feb 1981 (v.6#2) pg. 282

A low-speed analog-to-digital converter for the Apple II.
BYTE Sep 1979 (v.4#9) pg. 70

Tips on connecting a EMG (electromyogram) to a TRS-80 computer.
BYTE Jan 1981 (v.6#1) pg. 284

A/D and D/A conversion, an inexpensive approach. Circuit for a fast converter which uses few parts and supplies 8 (or more) bits of resolution over a 5-volt range.
BYTE Feb 1981 (v.6#2) pg. 312

Design and test microcomputer interfaces more easily by using the modules described here. They include D/A and A/D converters, data display and debouncing switches.
BYTE Apr 1981 (v.6#4) pg. 348

Six-channel A/D converter reads positive voltages from 0 to 3 V, with either 8 or 10 bits of accuracy. It interfaces to a computer through an 8-bit bidirectional port.
BYTE Jun 1981 (v.6#6) pg. 378

The variable-duty-cycle algorithm, a new and novel technique for handling data. BASIC program and simple circuit are used to provide a steady analog output voltage.
BYTE Oct 1981 (v.6#10) pg. 391

Apple analog-to-digital converter built on an Apple II plug-in prototyping card. May be adapted to other computer systems. Est. cost: $81.
BYTE Oct 1981 (v.6#10) pg. 458

Circuit for a D/A converter which fits the parallel port of an Apple II computer. Suitable for attaching a computer to a stereo amplifier for music/sound generation.
BYTE Dec 1981 (v.6#12) pg. 253

Analog interfacing in the real world. Learn how to design and build economical analog interfaces.
BYTE Jan 1982 (v.7#1) pg. 72

A high-resolution analog-to-digital converter for the TRS-80 reads 12 bits of data onto an 8-bit bus. Est. cost: $100.
BYTE Feb 1983 (v.8#2) pg. 378
Correction BYTE Aug 1983 (v.8#8) pg. 430

Circuit uses the 4051-type bilateral switch to select 1 of 8 analog data lines for input to a single-channel A/D converter.
BYTE Apr 1983 (v.8#4) pg. 464

Personal computer signal processing. An introduction to transducers, interfacing, and system development.
BYTE Apr 1984 (v.9#4) pg. 94

Planning a computerized measurement system. An introduction to the digital processing of analog signals.
BYTE Apr 1984 (v.9#4) pg. 114

Laboratory data collection with an IBM PC. A versatile hardware/software combination.
BYTE May 1984 (v.9#5) pg. 366

The analog-digital connection. A look at the relative merits of analog vs. digital electronics in the real world of data collection.
COMPUTERCRAFT Jan 1992 (v.2#1) pg. 62

Experimenting with Motorola's 68HC11 true single-chip computer. Part 6. SBC (single-board computer) applications. A look at MAG-11's binary output and how to use it A/D converter. Using the MAG-11 as a binary-display digital voltmeter and a bargraph photometer that measures foot-candles.
COMPUTERCRAFT Dec 1992 (v.2#12) pg. 16

What's your tenseness level. Connecting an interactive "Biobox" to a TRS-80 Color Computer enables you to experiment with biofeedback techniques. Est. cost: $15.
COMPUTERS & ELECTRONICS Feb 1983 (v.21#2) pg. 77
Added Info COMPUTERS & ELECTRONICS Jun 1983 (v.21#6) pg. 6

A low-cost digital-to-analog converter for the TRS-80 computer converts digital data into ac waveforms.
COMPUTERS & ELECTRONICS Apr 1983 (v.21#4) pg. 76

High-grade analog/digital and digital/analog converter for the Apple II computer. Part 1. Est. cost: $149.
COMPUTERS & ELECTRONICS Jul 1983 (v.21#7) pg. 55

High-grade analog/digital and digital/analog converter for the Apple II computer. Part 2.
COMPUTERS & ELECTRONICS Aug 1983 (v.21#8) pg. 63

Analog sensors for personal computers. How A/D converters work and tips on their use. Includes instructions for a "smart" light meter.
COMPUTERS & ELECTRONICS Feb 1984 (v.22#2) pg. 82

Analog techniques for digital computers. Part 1. Analog computer basics.
COMPUTERS & ELECTRONICS Sep 1984 (v.22#9) pg. 24

Analog techniques for digital computers. Part 2. Additional ways to develop programs that employ analog input methods similar to those of analog computers.
COMPUTERS & ELECTRONICS Oct 1984 (v.22#10) pg. 16

Basics of data conversion. A simplified approach to analog/digital compatibility.
COMPUTERS & PROGRAMMING Sep-Oct 1981 (v.21#5) pg. 37

Circuit uses the LM331 voltage-to-frequency converter chip. Used to convert DC control signals to TTL-compatible highly linear pulse train which is directly proportional to the input DC.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1979 (v.35#11) pg. 71

Introduction to how an analog signal (DC voltage) can be transmitted as a digital signal (TTL pulses). Includes a zero-to-ten volt (1) voltage-to-frequency converter circuit and (2) frequency-to-voltage converter circuit.
CQ. THE RADIO AMATEUR'S JOURNAL Oct 1993 (v.49#10) pg. 74

Build a high-speed digital-to-analog converter with as many as eight independent channels. Connects to a standard PC parallel printer port.

Electronics theory for everyone. Analog-to-digital converters.

Eight-channel analog-to-digital converter. Breadboard project uses eight phone jacks to attach the temperature-sensing probes described in this article.

PC-based test bench. Part 3. Interface to receive and send both analog and digital signals. Features 24-bit digital I/O, 8 channels of 8- or 12-bit A/D conversion, and a single 8-bit D/A conversion. Est. cost: $159 (kit)
ELECTRONICS NOW Aug 1992 (v.63#8) pg. 60

Temperature sensing. How a simple and accurate temperature sensor can be built. How to interface and control it with a computer. Includes software for controlling, calibrating and running the thermometer. Software is for the SWTP 6800 microcomputer, but can be adapted.

The amazing 1802. Some D/A and A/D applications. How to interface the COSMAC Elf II microcomputer to the analog world.

How to calibrate the Cromemco D+7A (seven channel A/D and D/A) using a potentiometer and two D-cells. Also includes a circuit fix to generate an inverted PHLDA signal if your computer does not produce that signal.

Analog and digital interfaces. How they work and how to apply them. Part 1. Theory of A/D and D/A conversion and a look at the Cromemco D+7A I/O board.

Analog and digital interfaces. Part 2. Practical applications.
Correction KILOBAUD MICROCOMPUTING #31 Jul 1979 pg. 24

Analog-to-digital converter for a COSMAC 1802 computer. Detects voltages from 0 to 5 volts and outputs a hex number (00,10,20,...F0) depending on the voltage. Estimated cost: $5.

Inexpensive A/D converter uses serial-polling technique and does not require a multiplexer. Circuit and software for monitoring a thermistor (thermostat) are described. Operates on 8080 computer.

A/D converter design for the TRS-80 Level II computer. Read voltages from 0 to +10 volts and display the results on the video monitor.

Profile of the AD-68 analog-to-digital converter from Innovative Technology for use with the SWTP 6800 computer.

Analog-to-digital converter interface is used to monitor the temperature via a MEK6800D2 computer kit. Includes 6800 assembly language program to record and display present, high, and low temperatures.
KILOBAUD MICROCOMPUTING #52 Apr 1981 (v.5#4) pg. 42

Multiple control with the multifaceted H8. Build this multichannel A/D converter. Includes software driver written in BASIC.
KILOBAUD MICROCOMPUTING #53 May 1981 (v.5#5) pg. 156

The data grabber. Construct this A/D converter for measurement and control applications. Monitors up to 16 analog input lines.
KILOBAUD MICROCOMPUTING #54 Jun 1981 (v.5#6) pg. 164

Get on the PET instrument bus. An easy machine-language implementation of the IEEE 488 (GPIB) bus via SRQ line interrupts.
KILOBAUD MICROCOMPUTING #55 Jul 1981 (v.5#7) pg. 167

How to cope with an analog world. This successive approximation register helps you better understand analog-to-digital conversion.
KILOBAUD MICROCOMPUTING #56 Aug 1981 (v.5#8) pg. 56

"Lie Detector" interface and software for an Apple computer. Attach a Radio Shack psychogalvanometer to a computer cassette port and measure the frequency output.
KILOBAUD MICROCOMPUTING #56 Aug 1981 (v.5#8) pg. 87

Fast, but inexpensive, multichannel analog-to-digital converter.
KILOBAUD MICROCOMPUTING #60 Dec 1981 (v.5#12) pg. 132

A/D converter program for an Apple II computer allows the computer to capture rapidly changing dc voltages and display the resultant plot on the video screen.
KILOBAUD MICROCOMPUTING Jan 1982 (v.6#1) pg. 68

Heath H8 computer assembly-language program which runs with an interface to measure the intervals between neural discharges in the human brain. Includes the schematic for the interface.
KILOBAUD MICROCOMPUTING Jan 1982 (v.6#1) pg. 72

Look at that sound. Transform the sounds of earthquakes, handclaps, etc. into photographs using an oscilloscope and a Cromemco D+7A A/D converter.
MICROCOMPUTING #73 Jan 1983 (v.7#1) pg. 56

Hook up your PET computer to the world with this digital-voltmeter interface which lets you monitor and record readings from outside devices. Est. cost: $5.
MICROCOMPUTING #75 Mar 1983 (v.7#3) pg. 132

Circuit for an inexpensive A/D converter for an Apple II computer. Allows the Apple II computer to function as an oscilloscope. Est. cost: $6.
MICROCOMPUTING #80 Aug 1983 (v.7#8) pg. 76

Using voltage comparators. A hands-on look at the popular and readily available LM339 which features four separate comparators in a single 14-pin DIP. Used in circuits to convert from analog-to-digital, monitor voltage levels, convert from one logic family to another, etc.
MODERN ELECTRONICS [2] May 1985 (v.1#8) pg. 36
Correction MODERN ELECTRONICS [2] Jul 1985 (v.2#1) pg. 4
Correction MODERN ELECTRONICS [2] Nov 1985 (v.2#5) pg. 91

Simulating the human brain using CMOS inverters. Circuits include a novel "neuron-like" A/D converter.
MODERN ELECTRONICS [2] Jul 1986 (v.3#7) pg. 68

Fundamentals of analog-to-digital (A/D) converters.
MODERN ELECTRONICS [2] Oct 1986 (v.3#10) pg. 68

Analog acquisition unit lets a computer store, compare, plot and analyze data from your experiments and circuits. Est. cost: $69.
MODERN ELECTRONICS [2] Nov 1986 (v.3#11) pg. 22

Fundamentals of digital-to-analog (D/A) converters.
MODERN ELECTRONICS [2] Nov 1986 (v.3#11) pg. 82

Analog-to-digital (A/D) conversion at video speeds is facilitated by two converter ICs. Tips on using these new chips for computerized-image capturing and digital TV signal processing.
MODERN ELECTRONICS [2] Jan 1987 (v.4#1) pg. 74

Surface-mount-device circuits: A design and construction guide. Projects include using SMCs (surface-mountable components) to produce a subminiature LED tone transmitter, A/D converter LED bargraph or metering circuit, and light-sensitive oscillator (probe).
MODERN ELECTRONICS [2] Feb 1987 (v.4#2) pg. 40

Measure voltage using a personal computer by adding a voltage-to-frequency converter onto an input port line.
MODERN ELECTRONICS [2] Mar 1987 (v.4#3) pg. 60

Delta modulation: The forgotten A/D converter. A close examination of this often-overlooked bandwidth-compression circuit for use in telephone, cable-TV and digital data-recording.
MODERN ELECTRONICS [2] May 1987 (v.4#5) pg. 20

Interfacing Commodore's user port. Using a low-cost serial A/D converter chip and some simple software, you can use your C-128, C-64 or VIC-20 personal computer to monitor real-world analog events.
MODERN ELECTRONICS [2] Jan 1988 (v.5#1) pg. 46
Correction MODERN ELECTRONICS [2] May 1988 (v.5#5) pg. 7

"Flash" or "video-speed" analog-to-digital converter ICs. Includes a circuit for sampling rates of up to 30 MHz.
MODERN ELECTRONICS [2] Dec 1988 (v.5#12) pg. 64

An in-depth look at the DAC-8143 a 12-bit serial-input CMOS digital-to-analog converter chip.
MODERN ELECTRONICS [2] Feb 1990 (v.7#2) pg. 62

Analog-to-digital converters that use a technique called successive approximation.
MODERN ELECTRONICS [2] Mar 1990 (v.7#3) pg. 65

Simple digital-to-analog converter circuit.
POPULAR ELECTRONICS [1] Jun 1976 (v.9#6) pg. 92

Circuit for a digital-to-analog converter uses COSMOS inverter.
POPULAR ELECTRONICS [1] Jan 1977 (v.11#1) pg. 92

The hows and whys of digital-to-analog and analog-to-digital converters. A review of new devices and circuits which reduce complexity and lower cost in interfacing analog and digital signals.
POPULAR ELECTRONICS [1] Apr 1977 (v.11#4) pg. 53

Digital to analog converters. Part 1. How an R-2R resistor ladder network can be used as a rudimentary D/A converter.
POPULAR ELECTRONICS [1] Jul 1978 (v.14#1) pg. 82
Correction POPULAR ELECTRONICS [1] Sep 1978 (v.14#3) pg. 6

Digital to analog converters. Part 2. Expanding the circuit in part 1 to a full-fledged D/A converter.
POPULAR ELECTRONICS [1] Aug 1978 (v.14#2) pg. 76

Build a low-cost A/D converter that works with any 8-bit computer. Can accept up to four channels of analog data, spanning from 0 to +2 volts dc, and change this information into 3.5 digits of BCD data. Includes software listings for 8080, 2650 and 6800 microprocessors. Est. cost: $30.
POPULAR ELECTRONICS [1] Sep 1978 (v.14#3) pg. 45

Analog to digital converters. Part 1. Several ways of converting analog information plus a homebrew parallel or flash A/D converter made from a voltage divider and a series of capacitors.
POPULAR ELECTRONICS [1] Sep 1978 (v.14#3) pg. 92

Analog to digital converters. Part 2.
POPULAR ELECTRONICS [1] Oct 1978 (v.14#4) pg. 82

A simple op-amp sample and hold circuit is one way to interface microprocessors with the outside world of analog signals.
POPULAR ELECTRONICS [1] Apr 1979 (v.15#4) pg. 76

Circuits for voltage-to-frequency converters using some new monolithic IC's (Teledyne 9400 and National LM331).
POPULAR ELECTRONICS [1] Oct 1979 (v.16#4) pg. 97

Frequency-to-voltage converter circuits.
POPULAR ELECTRONICS [1] Nov 1979 (v.16#5) pg. 93

A description and typical applications of the LM339 quad comparator integrated circuit chip, including analog-to-digital interface, CMOS to TTL translation, and monostable oscillator.
POPULAR ELECTRONICS [1] Jan 1980 (v.17#1) pg. 67

A low-cost A/D converter uses "current mirrors" instead of conventional op amps.
POPULAR ELECTRONICS [1] Aug 1980 (v.18#2) pg. 81

Analog-digital converter for TRS-80 interfacing. Build an 8-bit, 8-channel digital circuit that allows you to connect analog voltages to a TRS-80 computer. Expandable to 32 channels.
POPULAR ELECTRONICS [1] Jan 1982 (v.20#1) pg. 48

Processing analog signals for digital systems. How to create interfaces between the analog and digital world.
POPULAR ELECTRONICS [1] Jun 1982 (v.20#6) pg. 64

Digital electronics course. Digital-to-analog conversion.
POPULAR ELECTRONICS [2] Feb 1991 (v.8#2) pg. 69

Digital electronics course. Getting familiar with A/D (analog-to-digital) converters.
POPULAR ELECTRONICS [2] Mar 1991 (v.8#3) pg. 64

Digital electronics course. Getting familiar with A/D converters. Phase-locked loops and how to take advantage of these powerful but easy-to-use devices.
POPULAR ELECTRONICS [2] Apr 1991 (v.8#4) pg. 67

An introduction to analog-to-digital converters.
POPULAR ELECTRONICS [2] Aug 1993 (v.10#8) pg. 57

A low-cost analog-to-digital converter for your PC lets it function as a data-acquisition tool. Transducer circuits to measure temperature, light intensity, and heart-beat are included. Est. cost: $30.
POPULAR ELECTRONICS [2] Apr 1994 (v.11#4) pg. 47

Build an eight-channel analog-to-digital converter to interface your computer with the physical world. Est. cost: $25 (kit). Also includes instructions for building temperature probes.
POPULAR ELECTRONICS [2] Jun 1995 (v.12#6) pg. 45
Correction POPULAR ELECTRONICS [2] Sep 1995 (v.12#9) pg. 4

Sixteen channel analog multiplexer/demultiplexer circuit uses a CMOS device.
POPULAR ELECTRONICS [2] Apr 1998 (v.15#4) pg. 68

Universal sensor interface connects to your PC's parallel printer port and enables you to excite, control, and read inputs from a wide variety of sensors (temperature, pressure, humidity, etc.). This device is built around eight-channel, 12-bit analog-to-digital and digital-to-analog converters. Est. cost: $59 (kit).
POPULAR ELECTRONICS [2] Jun 1999 (v.16#6) pg. 39
Correction POPULAR ELECTRONICS [2] Oct 1999 (v.16#10) pg. 16

Circuit for a digital-to-analog converter using the RCA CA3160 as a voltage follower.
RADIO-ELECTRONICS Sep 1977 (v.48#9) pg. 80

Interfacing an analog-to-digital converter to an 8080-based microcomputer, plus typical software to service an A/D interrupt.
RADIO-ELECTRONICS Oct 1977 (v.48#10) pg. 76

A D/A conversion circuit uses an 8080 microprocessor, a DAC-08E digital-to-analog converter and a CMP-01C comparator. Includes the 16 instruction 8080 assembly language program.
RADIO-ELECTRONICS Feb 1978 (v.49#2) pg. 74

Convert analog input, such as voice input, to digital output by using a new Motorola IC which performs the modulation and demodulation functions of a CVSD (continously variable slope delta). Includes a schematic of a simple voice CVSD.
RADIO-ELECTRONICS Apr 1978 (v.49#4) pg. 84

Data acquisition for microcomputers. Software for 8080 illustrates a typical input routine for a 10 bit analog-to-digital converter.
RADIO-ELECTRONICS Jul 1978 (v.49#7) pg. 74

How to interface an 8085 microcomputer with an A/D converter so that eight analog channels can be monitored. Part 1. Use of I/O ports and programmable timer.
RADIO-ELECTRONICS Nov 1978 (v.49#11) pg. 82

How to interface an 8085 microcomputer with an A/D converter so that eight analog channels can be monitored. Part 2. A look at the software required to control the monitor.
RADIO-ELECTRONICS Dec 1978 (v.49#12) pg. 78

Versatile analog interface for your computer. Build this device to look at outside world without complex analog-to-digital conversion. Applications include a capacitance meter, proximity switch, and joystick interface.
RADIO-ELECTRONICS May 1980 (v.51#5) pg. 57

How to connect an A/D converter to a microprocessor.
RADIO-ELECTRONICS Jun 1980 (v.51#6) pg. 56

How to connect a D/A converter to a microprocessor. Two methods for interfacing are shown.
RADIO-ELECTRONICS Jul 1980 (v.51#7) pg. 51

D/A converter applications. A closer look at a digital-to-analog converter and its applications.
RADIO-ELECTRONICS May 1983 (v.54#5) pg. 69

Build this biofeedback monitor for your TRS-80 Model I or Model III computer.
RADIO-ELECTRONICS Dec 1984 (v.55#12) pg. 11 (ComputerDigest)

All about analog-to-digital converters. How they work and how to connect them to a microprocessor.
RADIO-ELECTRONICS Feb 1987 (v.58#2) pg. 71

10-bit floating point A/D converter circuit is very easy to interface to an Apple IIe, IIgs, or any other personal computer or microprocessor. Uses the Linear Technology LTC1092 IC.
RADIO-ELECTRONICS Aug 1988 (v.59#8) pg. 71

A/D and D/A conversion fundamentals.
RADIO-ELECTRONICS Sep 1988 (v.59#9) pg. 68

Build a digital-to-analog converter. Digital output from a standard parallel printer port is converted to an electrical current whose value varies according to the digital values.
RADIO-ELECTRONICS May 1989 (v.60#5) pg. 77

Simple circuit to boost low analog signals prior to reaching an A-to-D converter. This amplifier will give a gain of 10 with an input impedance of over a megohm.
RADIO-ELECTRONICS Sep 1990 (v.61#9) pg. 8

Voltage-to-frequency (V/F) converter chips. How they function and can be used as an alternative to A/D and D/A converters.
RADIO-ELECTRONICS Jun 1991 (v.62#6) pg. 54

Analog-to-digital and digital-to-analog converters. Discover the basics of the most widely used D/A and A/D conversion techniques.
RADIO-ELECTRONICS Jul 1991 (v.62#7) pg. 58

Experimenting with PC-based test equipment. Part 4. Low-cost analog-to-digital converter interface that allows you to measure temperature, displacement, audio signals, and any other 0-5 volt analog signal. Also includes construction of an accurate temperature sensor. Est. cost: $40 (kit).
RADIO-ELECTRONICS Jan 1992 (v.63#1) pg. 59
Added Info RADIO-ELECTRONICS Mar 1992 (v.63#3) pg. 14

Experimenting with PC-based test equipment. Part 5. Add a variety of analog inputs to the PC-based analog-to-digital converter. Looks at mechanical sensing, electrical sensing, and acoustic sensing.
RADIO-ELECTRONICS Feb 1992 (v.63#2) pg. 65

The Exar XR-4151 chip converts an applied DC voltage to a pulse output that has a repetition frequency proportional to the DC voltage. Also convert square-wave or pulse input to DC. Use in A/D and D/A conversion and data transmission.
SCIENCE & ELECTRONICS [2] Mar-Apr 1981 (v.21#2) pg. 75

Use your computer as a high-speed oscilloscope. How to build an inexpensive analog-to-digital converter.
SCIENCE PROBE! Jul 1992 (v.2#3) pg. 113