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DIGITAL ELECTRONICS entries in Index to How To Do It Information
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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.

DIGITAL ELECTRONICS
sa   ANALOG/DIGITAL CONVERSION
sa   COMPUTER
sa   DIGITAL AUDIO
sa   DIGITAL ELECTRONICS TESTING
sa   ELECTRONICS
sa   MICROPROCESSOR
sa   PHASE-LOCKED LOOP
sa   PULSE GENERATOR
sa   RANDOM-ACCESS MEMORY
sa   READ-ONLY MEMORY
sa   SCHMITT TRIGGER
x   LOGIC CIRCUIT (DIGITAL)
x   SWITCH (DIGITAL LOGIC)
xx   COMPUTER
xx   ELECTRONICS

TTL loading considerations when designing your own digital circuits.
BYTE Feb 1977 (v.2#2) pg. 122

A review of several different ways to generate pulses or time delays on cue, using analog, asynchronous and synchronous (clocked) digital methods. Designs (often used in computers) involve pulse waveform edges, Schmitt triggers, resistors, and capacitors.
BYTE Aug 1977 (v.2#8) pg. 120

Program for a TI-59 programmable calculator to allow simulation or testing of combinational logic circuits.
BYTE Apr 1979 (v.4#4) pg. 172

Some musings on hardware design. A look at some of the more interesting types of TTL integrated circuits, the ease with which logic design can be accomplished, and a few design considerations and trouble-shooting hints to stimulate the homebrew use of digital logic.
BYTE Sep 1979 (v.4#9) pg. 62

Simulation of simple digital logic through a computer-aided design system. Part 1. Comparable to professional systems in all aspects but speed. Written in BASIC for TRS-80.
BYTE Jan 1983 (v.8#1) pg. 396

Simulation of simple digital logic through a computer-aided design system. Part 2. Design of an advanced logic simulator.
BYTE Apr 1983 (v.8#4) pg. 398

Practical guidelines for interfacing electronic circuits. Basic aspects of interfacing CMOS devices, TTL devices, phototransistors, switches, and/or a comparator or op amp.
COMPUTERCRAFT Aug 1991 (v.1#5) pg. 65

A designer's guide to interfacing digital logic. What you should know to successfully and safely interface various digital-logic families of devices.
COMPUTERCRAFT Dec 1992 (v.2#12) pg. 42

Circuit for debouncing inexpensive, normally-open spst pushbuttons.
COMPUTERS & ELECTRONICS Oct 1983 (v.21#10) pg. 86

Using CMOS type circuits to create pulse generator, bounceless mechanical switch interface, and an inverter.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1981 (v.37#4) pg. 52

Flip-flop, the building blocks of computers. Made from two transistors and a few other standard parts. Astable multivibrator and monostable multivibrator flip-flops shown.
ELECTRONICS ILLUSTRATED Jan 1966 (v.9#1) pg. 80

Tips on using both CMOS and TTL parts in the same logic design.
ELECTRONICS NOW Jul 1993 (v.64#7) pg. 8

Programmable logic devices (PLDs). An introduction to using an unstructured array of AND and OR logic gates that can be organized to perform dedicated functions by selectively opening or otherwise altering the interconnections between the gates.
ELECTRONICS NOW May 1994 (v.65#5) pg. 31

Build a programmable logic device (PLD) programmer. Est. cost: $150.
ELECTRONICS NOW May 1994 (v.65#5) pg. 39
Correction ELECTRONICS NOW Aug 1994 (v.65#8) pg. 15

Tips on preventing erratic operation when working with TTL flip-flops.
ELECTRONICS NOW Feb 1997 (v.68#2) pg. 18
Added Info ELECTRONICS NOW Oct 1997 (v.68#10) pg. 16

Operation and design of several low-power multivibrator circuits employed for digital switching applications.
ELECTRONICS WORLD May 1968 (v.79#5) pg. 74

Triggering logic circuits. Simple circuits to overcome contact bounce which can cause errors in logic circuits.
ELECTRONICS WORLD Mar 1971 (v.85#3) pg. 29

A collection of digital circuits that have been improvised to act as RTL (resistor-transistor-logic) elements operating at speeds up to 100 KHz at input.
ELECTRONICS WORLD Apr 1971 (v.85#4) pg. 36

Circuit to convert 60-Hz sine waves from power line into accurate digital pulses. Circuit requires no DC.
ELECTRONICS WORLD Aug 1971 (v.86#2) pg. 69

Novel counter, decoder, readout demonstrates the operation of RTL gates, JK flip-flops and transistor switches.
ELECTRONICS WORLD Dec 1971 (v.86#6) pg. 40

Cross-coupling demonstrator shows cross-coupled circuits used in all digital computers. Est. cost: $9.
ELEMENTARY ELECTRONICS Jul-Aug 1966 (v.2#3) pg. 45

Experiments with the universal logic circuit. A simple circuit using only five parts and found in all digital computers. Est. cost: $1.
ELEMENTARY ELECTRONICS Sep-Oct 1966 (v.3#1) pg. 67

Understanding logic circuits.
ELEMENTARY ELECTRONICS May-Jun 1970 (v.10#2) pg. 55

Hexadecimal & binary-coded decimal code switches. A look at mechanical slide switches which provide 4-bit binary outputs from 0000 to either 1001 or 1111.
HANDS-ON ELECTRONICS Summer 1984 (v.2#1) pg. 70

Digital fundamentals. Short courses to aid the electronics hobbyist and avid experimenter in understanding the digital theory used today in virtually all types of electronic equipment. Part 1. Binary data.
HANDS-ON ELECTRONICS Winter 1985 (v.2#3) pg. 73

Combination gate and power driver IC's are useful for applications such as driving incandescent lamps, relays, solenoids, and other interface devices. Typical circuits are discussed.
HANDS-ON ELECTRONICS Winter 1985 (v.2#3) pg. 87

Digital fundamentals. Part 2. Digital-logic circuits. Discover the operation of 5 basic digital-logic elements and how to use their truth tables. Understand simple Boolean algebra expressions. Learn about rise and fall times and propagation delay.
HANDS-ON ELECTRONICS Spring 1985 (v.2#4) pg. 73

Digital fundamentals. Part 3. Digital circuits. Operation of inverters and gates, gates, and logic gates. Insight on small-scale integration (SSI) to very-large scale integration (VLSI).
HANDS-ON ELECTRONICS Summer 1985 (v.2#5) pg. 58

Simple latch circuit to "debounce" a switch circuit.
HANDS-ON ELECTRONICS Nov-Dec 1985 (v.2#6) pg. 5

Inside hex buffers. How to use these "universal circuits".
HANDS-ON ELECTRONICS Nov-Dec 1985 (v.2#6) pg. 72

Digital fundamentals. Part 4. Understanding and using flip-flops.
HANDS-ON ELECTRONICS Nov-Dec 1985 (v.2#6) pg. 83

Digital fundamentals. Part 5. Understanding counters and shift registers. A look into sequential logic circuits to discover what makes binary counters and shift registers work.
HANDS-ON ELECTRONICS Jan-Feb 1986 (v.3#1) pg. 85

Circuit for using a CMOS gate in a switching application.
HANDS-ON ELECTRONICS Mar-Apr 1986 (v.3#2) pg. 7

Digital fundamentals. Part 6. Understanding combinational logic circuits. How gates and inverters are combined to perform unique and specific logic functions.
HANDS-ON ELECTRONICS Mar-Apr 1986 (v.3#2) pg. 79

Digital pulse-train switches overcome the "noise" of mechanical switches in electronic applications.
HANDS-ON ELECTRONICS Jun 1987 (v.4#6) pg. 64

Choosing the right logic chip. Understanding the difference in the capabilities of various logic IC groups.
HANDS-ON ELECTRONICS Feb 1988 (v.5#2) pg. 59
Added Info HANDS-ON ELECTRONICS Jun 1988 (v.5#6) pg. 6

Pulse code modulation. Everything you want to know about this digital method for encoding signals.
HANDS-ON ELECTRONICS Aug 1988 (v.5#8) pg. 58

E-Z math (for electronics). Understanding pulse signals for logical operations, motor control, communications, etc.
HANDS-ON ELECTRONICS Sep 1988 (v.5#9) pg. 73

E-Z math (for electronics). Boolean algebra and logic circuits. A look at the mathematics of digital-logic circuits.
HANDS-ON ELECTRONICS Jan 1989 (v.6#1) pg. 74

Kilobaud Klassroom No. 8. Pulses. A look at the chips that make up the support chips and functions for the computers. A study of pulse generation and shaping, one-shots, cheap shots, pulse delay and timing diagrams. Build a test unit to generate hexidecimal numbers.
KILOBAUD MICROCOMPUTING #13 Jan 1978 pg. 74

Use a 74163 IC to deliver lower frequencies than a 555 clock can produce.
KILOBAUD MICROCOMPUTING #50 Feb 1981 (v.5#2) pg. 169

Electronic circuits for a single AND, OR and NOT gate require a minimum of components.
KILOBAUD MICROCOMPUTING #57 Sep 1981 (v.5#9) pg. 182
Added Info KILOBAUD MICROCOMPUTING Feb 1982 (v.6#2) pg. 163

How to get started in electronics. Part 2: Inside integrated circuits. Looks at diode gates, transistor gates, linear ICs, op-amps, etc.
MODERN ELECTRONICS [2] Dec 1984 (v.1#3) pg. 58

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

The versatile 7400 quad NAND gate. Using NAND gates to assemble basic logic gates, TTL logic probes, 4-bit decoder, flip-flop, switch debouncer, etc.
MODERN ELECTRONICS [2] Oct 1986 (v.3#10) pg. 62

Programmable digital sequencers and controllers. Use them to activate LEDs, motors, solenoids, etc. Part 1. Construction of a 16-step, 4-bit programmable digital sequencer is shown which uses a "punched card" and simple card reader to enter the programs.
MODERN ELECTRONICS [2] May 1988 (v.5#5) pg. 62

Programmable digital sequencers and controllers. Part 2. Construction of a 256-step, programmable digital sequencer is shown.
MODERN ELECTRONICS [2] Jun 1988 (v.5#6) pg. 70

New logic function symbols. Here is what these latest graphic symbols mean and why they are now being used in many data books and schematics.
MODERN ELECTRONICS [2] Jul 1988 (v.5#7) pg. 16

Understanding negative logic. Taking the mystery out of a logic type that can greatly simplify circuit design and analysis.
MODERN ELECTRONICS [2] Oct 1988 (v.5#10) pg. 22
Added Info MODERN ELECTRONICS [2] Dec 1988 (v.5#12) pg. 7
Added Info MODERN ELECTRONICS [2] Apr 1989 (v.6#4) pg. 7
Added Info MODERN ELECTRONICS [2] Jul 1989 (v.6#7) pg. 6

Electronic latching circuit goes on when pulse is applied and stays on until reset.
POPULAR ELECTRONICS [1] Aug 1965 (v.23#2) pg. 102

"Logic Demon". Using integrated circuits, this demonstrator duplicates the logic functions (nor, and, or, nand) of electronic computers. Est. cost: $10.
POPULAR ELECTRONICS [1] Dec 1966 (v.25#6) pg. 41

Logic switch. Used to trigger an RTL circuit without the "noise" of mechanical switches. Circuit and pushbuttons are housed in a small plastic vial.
POPULAR ELECTRONICS [1] Sep 1969 (v.31#3) pg. 67

No-bounce pushbutton. Input trigger-source for digital circuits delivers a clean, single output pulse for each operation of a mechanical switch. Est. cost: $5.
POPULAR ELECTRONICS [1] Mar 1970 (v.32#3) pg. 52

Build the Digital Logic Microlab. Learn how digital circuits work. Over 100 experiments. Est. cost: $32.
POPULAR ELECTRONICS [1] Apr 1970 (v.32#4) pg. 27

Experiments with a shift register, the storage device for digital computers and computer logic.
POPULAR ELECTRONICS [1] May 1970 (v.32#5) pg. 43

Getting to know the JK flip-flop circuit.
POPULAR ELECTRONICS [1] Sep 1970 (v.33#3) pg. 67

Equivalency in RTL circuits. Part 1. RTL (resistor-transistor-logic) circuits can be duplicated from conventional discrete components during the design and testing stage, before selecting an IC.
POPULAR ELECTRONICS [1] Feb 1971 (v.34#2) pg. 49

Equivalency in RTL circuits. Part 2. What to do with flip-flops (T or JK).
POPULAR ELECTRONICS [1] Jun 1971 (v.34#6) pg. 39

Three flip-flop acting circuits are actually multivibrator circuits using IC op amps.
POPULAR ELECTRONICS [1] Jul 1972 (v.2#1) pg. 58

Build a digital logic trainer. Baby computer performs 32 functions and teaches Boolean algebra.
POPULAR ELECTRONICS [1] Sep 1972 (v.2#3) pg. 42

Meet the IC logic families. Basic features of the TTL, CMOS, and ECL families.
POPULAR ELECTRONICS [1] Jun 1973 (v.3#6) pg. 68

Logic circuit which doubles the frequency of the input pulses.
POPULAR ELECTRONICS [1] Jan 1974 (v.5#1) pg. 26

A guide to CMOS operations. Part 2. Practical applications in logic circuits.
POPULAR ELECTRONICS [1] Apr 1974 (v.5#4) pg. 59

Build the CMOS microlab to teach or learn digital logic or to breadboard and test digital circuits. Est. cost: $35.
POPULAR ELECTRONICS [1] Jun 1974 (v.5#6) pg. 40

Basic digital logic course. Part 1. Number systems.
POPULAR ELECTRONICS [1] Oct 1974 (v.6#4) pg. 56

Basic digital logic course. Part 2. Concepts and circuits.
POPULAR ELECTRONICS [1] Nov 1974 (v.6#5) pg. 57

Basic digital logic course. Part 3. Flip-flops and how to build a very low cost, 8-key (octal) terminal. Est. cost: $57.
POPULAR ELECTRONICS [1] Dec 1974 (v.6#6) pg. 38

Circuit for a simple, manually operated logic 0 and logic 1 generator.
POPULAR ELECTRONICS [1] Mar 1975 (v.7#3) pg. 81

Karnaugh maps for fast digital design. A neat, simple method for working with logic.
POPULAR ELECTRONICS [1] Sep 1975 (v.8#3) pg. 50

How to debounce mechanical switches for digital logic use.
POPULAR ELECTRONICS [1] Oct 1975 (v.8#4) pg. 51

Electronic switching with transmission gates. CMOS device provides bounceless switching at speeds up to 10 MHz.
POPULAR ELECTRONICS [1] Feb 1976 (v.9#2) pg. 62

Building a TTL sequence generator can teach you about digital logic IC's and provide a circuit for use in signal generators, LED flashers, electronic music, and random on-off switches.
POPULAR ELECTRONICS [1] Feb 1976 (v.9#2) pg. 101

Several practical circuits which use one of the simplest digital logic circuits, the NAND gate, help take the mystery out of IC's.
POPULAR ELECTRONICS [1] Jun 1976 (v.9#6) pg. 102

Propagation delay. Where those "glitches" come from in logic circuits and what to do about them.
POPULAR ELECTRONICS [1] Dec 1976 (v.10#6) pg. 64

Simple circuit that generates TTL-compatible clock pulses.
POPULAR ELECTRONICS [1] Jan 1977 (v.11#1) pg. 34

Circuits for CMOS-to-TTL interfaces using the 555 timer.
POPULAR ELECTRONICS [1] Jan 1977 (v.11#1) pg. 92

How to design TTL (transistor-transistor logic) digital systems.
POPULAR ELECTRONICS [1] Oct 1977 (v.12#4) pg. 56

Three-state logic. Experiments with circuits that will teach you the basics of three-state logic, a key element in digital logic and microprocessor technology.
POPULAR ELECTRONICS [1] Mar 1978 (v.13#3) pg. 84

Experiments with programmable logic arrays. Useful logic circuit has many applications in waveform generation or digital control.
POPULAR ELECTRONICS [1] Jun 1978 (v.13#6) pg. 88

A look at digital logic circuits which operate like multiplexers or data selectors. Emphasis is on the 74150 multiplexer.
POPULAR ELECTRONICS [1] Nov 1978 (v.14#5) pg. 112

Electronic Christmas gifts built around the TL489C analog level detector. It can be used to make (1) soil moisture detectors, (2) temperature range indicators, (3) controls and alarms for fish fanciers, chemists, chefs and photographers, (4) battery & continuity testers, (5) toys and games, (6) simple light organs, (7) humidity alarms,...etc.
POPULAR ELECTRONICS [1] Dec 1978 (v.14#6) pg. 78

The 74154 demultiplexer IC. Describes the difference between this chip and the multiplexers discussed last month.
POPULAR ELECTRONICS [1] Dec 1978 (v.14#6) pg. 84
Correction POPULAR ELECTRONICS [1] Mar 1979 (v.15#3) pg. 6

The digital comparator (magnitude comparator). Digital counterpart of the analog comparator discussed in the May 1979 issue.
POPULAR ELECTRONICS [1] Jun 1979 (v.15#6) pg. 81

Circuits for missing-pulse detectors and slot switches use 555 and 556 ICs. Such circuits may be found in intrusion alarms and adjustable-duration event timers.
POPULAR ELECTRONICS [1] Sep 1979 (v.16#3) pg. 89

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

Circuit for coupling a high-power circuit to low-power TTL logic.
POPULAR ELECTRONICS [1] Jul 1980 (v.18#1) pg. 30
Correction POPULAR ELECTRONICS [1] Oct 1980 (v.18#4) pg. 8

A look at do-it-yourself logic chips, called "programmable array logic chips" (PAL). What is available and how they are programmed using a PROM programmer.
POPULAR ELECTRONICS [1] Oct 1980 (v.18#4) pg. 80

Experimenting with shift registers. Part 1. Basics of operation and design, plus some of the most important applications.
POPULAR ELECTRONICS [1] Oct 1980 (v.18#4) pg. 86

Experimenting with shift registers. Part 2. Specific chips and experiments with application circuits.
POPULAR ELECTRONICS [1] Nov 1980 (v.18#5) pg. 104

CMOS basics: The 4011 Quad NAND gate. Includes several simple circuits.
POPULAR ELECTRONICS [1] Feb 1981 (v.19#2) pg. 95

Explaination of the difference between "normal" TTL gates and "open-collector" gates.
POPULAR ELECTRONICS [1] Jun 1981 (v.19#6) pg. 82

How to draw truth tables for negative logic gates.
POPULAR ELECTRONICS [1] Sep 1981 (v.19#9) pg. 98
Correction POPULAR ELECTRONICS [1] Nov 1981 (v.19#11) pg. 8

Experimenting with high-speed logic called "emitter-coupled" logic (ECL).
POPULAR ELECTRONICS [1] Oct 1981 (v.19#10) pg. 102

Circuit for a "clock" oscillator for either TTL or CMOS. Has provison for stopping and single-stepping.
POPULAR ELECTRONICS [1] Jan 1982 (v.20#1) pg. 76

Circuit will condition a low-voltage ac signal (60-Hz) into a TTL compatible signal.
POPULAR ELECTRONICS [1] Mar 1982 (v.20#3) pg. 102
Added Info COMPUTERS & ELECTRONICS Dec 1982 (v.20#12) pg. 101

Timing diagrams. How to read and interpret timing diagrams from device manufacturers in order to design and troubleshoot digital circuits.
POPULAR ELECTRONICS [1] Sep 1982 (v.20#9) pg. 66

E-Z math (for electronics). Boolean laws and reduction. If you know a few Boolean laws, you can greatly simplify any logic circuit.
POPULAR ELECTRONICS [2] Feb 1989 (v.6#2) pg. 75
Added Info POPULAR ELECTRONICS [2] Aug 1989 (v.6#8) pg. 4

E-Z math (for electronics). DeMorgan's theorem gives a set of rules and procedures for working with NAND and NOR circuits.
POPULAR ELECTRONICS [2] Mar 1989 (v.6#3) pg. 75

Simple transistor circuits which function like digital gates are built around discrete components and can be driven from most CMOS or TTL IC's. Used to increase output drive current. (1) Inverting amplifier. (2) Non-inverting amplifier. (3) Buffer-amplifier. (4) Buffer. (5) Switch operating like an inverting-buffer. (6) Non-inverting buffer.
POPULAR ELECTRONICS [2] Jun 1989 (v.6#6) pg. 88

Digital electronics course. Based on an introductory course in digital electronics and microprocessors given by the EIA/CEG. All experiments use a solderless breadboard. Building a power supply for the breadboard.
POPULAR ELECTRONICS [2] Jul 1989 (v.6#7) pg. 68

Digital electronics course. Enlightening you on LED's. How to connect LED's, compute the series resistance, measure important diode characteristics, etc.
POPULAR ELECTRONICS [2] Aug 1989 (v.6#8) pg. 75

Digital electronics course. A new way to count. Explore the binary number system by following this hands-on training exercise.
POPULAR ELECTRONICS [2] Sep 1989 (v.6#9) pg. 79

Digital electronics course. Taking a circuit's pulse. What is a logic 1 or 0? How are they represented, detected, and used in digital-logic circuits?
POPULAR ELECTRONICS [2] Oct 1989 (v.6#10) pg. 80

Digital electronics course. Unlocking the gates. Learn about the building blocks (gates) that make computers possible.
POPULAR ELECTRONICS [2] Nov 1989 (v.6#11) pg. 79
Correction POPULAR ELECTRONICS [2] Feb 1990 (v.7#2) pg. 4

Digital electronics course. Finding the right combination. Learn how simple gates are combined to produce complex digital circuits.
POPULAR ELECTRONICS [2] Dec 1989 (v.6#12) pg. 70

Digital electronics course. Universal logic. Learn how basic gates are used to perform exotic functions. How to apply DeMorgan's theorem to select the right gates for the job.
POPULAR ELECTRONICS [2] Jan 1990 (v.7#1) pg. 76
Correction POPULAR ELECTRONICS [2] Apr 1990 (v.7#4) pg. 4

An introduction to digital electronics. Covers logic families, gates, and flip-flops.
POPULAR ELECTRONICS [2] Apr 1990 (v.7#4) pg. 71

Digital electronics course. Sequential logic. Create an active logic circuit and learn about time-dependent logic circuits.
POPULAR ELECTRONICS [2] Jun 1990 (v.7#6) pg. 62

Digital electronics course. Introduction to flip-flops (bistable multivibrators), a digital device capable of storing a single bit of information.
POPULAR ELECTRONICS [2] Jul 1990 (v.7#7) pg. 70

Digital electronics course. Flip-Flop applications in the real world. Experimental circuits include a level indicator, ripple counter, synchronous counter, and ring counter.
POPULAR ELECTRONICS [2] Aug 1990 (v.7#8) pg. 70

Digital electronics course. An introduction to latches.
POPULAR ELECTRONICS [2] Dec 1990 (v.7#12) pg. 71

Digital electronics course. Binary comparitors. How error and parity checking and other computer functions are implemented.
POPULAR ELECTRONICS [2] Jan 1991 (v.8#1) pg. 72

How to reduce the number of TTL logic gates required in an unusual, yet simple, way.
POPULAR ELECTRONICS [2] Apr 1991 (v.8#4) pg. 22

Boosting the power output when using logic gates.
POPULAR ELECTRONICS [2] Jun 1993 (v.10#6) pg. 70

Pinouts and tools. A description of 7400-series chips that have alternate pinouts and functional blocks (they have the same function number, but different architecture). A look at the 7451, 7453, and 7454 AND-NOR gates.
POPULAR ELECTRONICS [2] Mar 1994 (v.11#3) pg. 26

Pinouts and tools (continued). More 7400-series IC's that violate IC-designation standards. A look at the 7455 and 7471.
POPULAR ELECTRONICS [2] Apr 1994 (v.11#4) pg. 26

Customer-relations addresses for suppliers of 54xxxx and 74xxxx series IC's.
POPULAR ELECTRONICS [2] May 1994 (v.11#5) pg. 26

All about digital integrated circuit logic families. Learn about the characteristics of the different TTL and CMOS logic families, and the right way and time to use each.
POPULAR ELECTRONICS [2] Jan 1996 (v.13#1) pg. 43

CMOS circuit converts 4-bit BCD (binary coded decimal) data inputs into one or more decimal outputs and displays them on LEDs.
POPULAR ELECTRONICS [2] Apr 1998 (v.15#4) pg. 66

Building-block circuit to provide a fast, high-output current inverting buffer which can be directly interfaced to any type of CMOS logic gate or timing device.
POPULAR ELECTRONICS [2] Aug 1998 (v.15#8) pg. 51

Exploring discrete-transistor logic circuits as alternatives to using TTL or CMOS-logic integrated circuits.
POPULAR ELECTRONICS [2] Oct 1998 (v.15#10) pg. 45

Understanding how IC logic gates and inverters operate. Looks at both the 7400-TTL family and the 4000-CMOS family.
POPULAR ELECTRONICS [2] Feb 1999 (v.16#2) pg. 51

Interfacing logic families. How both CMOS and TTL digital-logic devices can be intermingled in a single circuit and interface with the non-digital world. Several circuits included.
POPULAR ELECTRONICS [2] Mar 1999 (v.16#3) pg. 59

How to design digital circuits. Part 1. Boolean algebra and Karnaugh maps.
RADIO-ELECTRONICS Dec 1978 (v.49#12) pg. 63

How to design digital circuits. Part 2. Digital logic design, including sequential circuits and multiple output sequential circuits and multiple output functions.
RADIO-ELECTRONICS Jan 1979 (v.50#1) pg. 47

TTL design: tricks and tips.
RADIO-ELECTRONICS Nov 1980 (v.51#11) pg. 56

Designing with majority-logic (threshold-logic) gates.
RADIO-ELECTRONICS Jan 1981 (v.52#1) pg. 64

All about ECL (emitter-coupled logic) circuits. Part 1.
RADIO-ELECTRONICS Sep 1983 (v.54#9) pg. 53

All about ECL (Emitter-coupled logic) circuits. Part 2.
RADIO-ELECTRONICS Nov 1983 (v.54#11) pg. 65

How to design electronic switching circuits. Part 1.
RADIO-ELECTRONICS Jan 1984 (v.55#1) pg. 77

How to design electronic switching circuits. Part 2.
RADIO-ELECTRONICS Feb 1984 (v.55#2) pg. 84

Circuit design shortcut focuses on the "exclusive-OR" (XOR) gate.
RADIO-ELECTRONICS Aug 1984 (v.55#8) pg. 14

Use digital techniques to control analog signals with CMOS switches.
RADIO-ELECTRONICS Aug 1984 (v.55#8) pg. 69

All about CMOS clock circuits. Using CMOS logic IC's to make squarewave-generator or "clock" circuits.
RADIO-ELECTRONICS Nov 1984 (v.55#11) pg. 77
Added Info RADIO-ELECTRONICS Aug 1985 (v.56#8) pg. 82

A simple solution to mechanical switch debouncing.
RADIO-ELECTRONICS Dec 1984 (v.55#12) pg. 80

Designing with digital IC's. Part 1. A look at logic families, logic levels, and other digital basics.
RADIO-ELECTRONICS Feb 1985 (v.56#2) pg. 77

Designing with digital IC's. Part 2. A look at CMOS (complementary metal oxide semiconductors), one of the most popular of the logic families, and the special handling that CMOS devices require.
RADIO-ELECTRONICS Apr 1985 (v.56#4) pg. 75

Designing with digital IC's. Part 3. All about logic gates, the basic building blocks of digital electronics.
RADIO-ELECTRONICS May 1985 (v.56#5) pg. 94

Designing with digital IC's. Part 4. How to interface TTL and CMOS devices to each other and to other circuitry.
RADIO-ELECTRONICS Jul 1985 (v.56#7) pg. 63

Designing with digital IC's. Part 5. How simple gates can be combined to form the flip-flop circuit.
RADIO-ELECTRONICS Aug 1985 (v.56#8) pg. 72

Designing with digital IC's. Part 6. More about flip-flops and how they can be combined to form shift registers.
RADIO-ELECTRONICS Sep 1985 (v.56#9) pg. 71

Designing with digital IC's. Part 7. Counter circuits and how they work.
RADIO-ELECTRONICS Nov 1985 (v.56#11) pg. 75

Designing with digital IC's. Part 8. One-shots (monostable multivibrators) and clocks.
RADIO-ELECTRONICS Jan 1986 (v.57#1) pg. 71

Logic-gate fundamentals. A small group of simple logic elements is at the heart of all digital circuitry. How each element works is discussed in detail.
RADIO-ELECTRONICS Apr 1987 (v.58#4) pg. 50

Trigger pulses. Simple circuits to generate a squarewave reset pulse for digital applications.
RADIO-ELECTRONICS May 1987 (v.58#5) pg. 121

Working with flip-flops (bistable latches, memory elements) which are the basis of all digital circuits. Learn about the different types and practical applications for them.
RADIO-ELECTRONICS Jun 1987 (v.58#6) pg. 64

Logic-family translation. Mixing TTL and CMOS logic families in the same electronics package.
RADIO-ELECTRONICS Aug 1987 (v.58#8) pg. 30

Programmable logic devices (PLDs). How the new reconfigurable logic devices will revolutionize the design of logic systems. Looks at PLD's, PROM's, EPROM's, EEPROM's, PLA's, FPLA's, and PAL's. Part 1. History of programmable logic.
RADIO-ELECTRONICS Feb 1988 (v.59#2) pg. 59

Programmable logic devices (PLDs). Part 2. PLD's and programming devices available at hobbyist prices.
RADIO-ELECTRONICS Mar 1988 (v.59#3) pg. 63

Logic circuit design basics. How to design your own logic circuits even if you're not an engineer. A systematic approach used by circuit designers to create switching circuits.
RADIO-ELECTRONICS Sep 1988 (v.59#9) pg. 57

Edge-detector circuit is used to sense a trigger pulse and then generate a pulse of the appropriate width to activate an electronic circuit.
RADIO-ELECTRONICS Jun 1989 (v.60#6) pg. 12
Correction RADIO-ELECTRONICS Sep 1989 (v.60#9) pg. 14

SUSIE simplifies digital design and makes breadboards a thing of the past. An introduction to the use of the SUSIE digital circuit simulation computer software.
RADIO-ELECTRONICS Dec 1990 (v.61#12) pg. 57

How electronic flip-flops and NAND gates work and how they can be used to make counters, alarms and detectors.
SCIENTIFIC AMERICAN May 1973 (v.228#5) pg. 108