Technical Specification:
The Digital Logic Trainer board consist of below:
The whole trainer is fully designed by FPGA/CPLD logic circuit. Buffer circuits have enhanced protection for each module which is powered by main unit through power socket, avoiding wrong input power source during the experiment. Covers different levels of logic circuit experiments, ranging from combinational logic, sequential logic as well as the logic circuit interfacing with microcontroller and practical application circuit for daily use. Includes various types of ADC & DAC circuits to learn different interfacing circuits between analog and digital signal. Built-in 8-channel multiplexer in main unit to measure multiple digital signals in real time. Multiple operation modes from 4-digit 7-segment display (a) scanning display mode, (b) individual digit display mode, (c) frequency counter mode for measurement of internal and external clock. Individual keep case for all modules for easy storing and carrying.
Main Unit:
DC Power Supply
Fixed DC power supply: +5V/2A, -5V/0.5A, +12V/2A
With overload protection
Clock Generator
Signal amplitude output: 3.3V
With adjustable output frequency: square wave,
1Hz ~ 1MHz, 6 range
Frequency display :4-digit, 7-segment LED
Logic Level Switch: Toggle switches x 8, 3.3V output
Data Level Switch: 8-bit DIP switch x 2, 3.3V output
Pulse Signal Generator
2 sets of toggle switch with independent control output, Each set with Q, Q’ output
Pulse width > 5ms, each with Denounce circuit.
Logic Level Indicator
16-bit LED with driver and protection circuit
Input Impedance: > 100K ohms
8 Channel Logic Signal Tracer
8 logic signal input: input impedance: ? 100K ohms, 3.3V input
Fixed DC level shift for each channel
Input signal attenuation ratio: 1/8
Output signal: BNC or 2mm plug.
Oscilloscope SYNC. select: ALT/CHOP and scan-frequency adjustment. The function can be used only with analog oscilloscope. 7-segment LED display & frequency measurement.
DIP switches select the function:
00: Scanning display mode
Common anode for the control of 7-segments a ~ g. Scanning cathode for the control of 4-digit S0 ~ S3
Independent display mode
Input 4-digit of data individually and decode
the data at 7-segment display separately
Independent binary input and hexadecimal output
10: Frequency counter for internal clock
Display the frequency of clock generator from main unit
Frequency range: 0.001KHz ~ 999.9KHz
11: Frequency counter for external clock.
Display the frequency of clock signal from external unit
Frequency range: 0.001KHz ~ 999.9KHz
Rotary Encoder Rotary encoder output: PA, PB and GND signal, 3.3V output
Standard Signal Generator 5 sets of frequency:
20MHz, 1MHz, 10KHz, 100Hz, 1Hz
Experiment Modules
All built-in DC power socket module supply DC power from the main unit.
Each module includes a CPLD chip to implement all digital circuits shown on module panel.
2mm sockets, bridge plugs, and cables are used throughout all modules so that students can easily create the circuits and compare different results in short time.
With comprehensive experiment manual.
List of Modules
Combinational Logic Circuit Experiment
Arithmetical Logic/Tri-state & Code Converter Experiment
Encoder, Decoder & Multiplexer Logic Circuit Experiment
Flip-flop & Sequential Logic & Counter Circuit Experiment
Oscillator/Pulser; Load; Up/Down Counter Circuit Experiment
Memory; Matrix LED; DAC/ADC & MCU Interface Circuit Experiment
Digital & Analog Timer, Pulse Generator Circuit Experiment
Ramp-compare/SAR/Dual-slope ADC Experiment
Keyboard & Display for Stepping Motor Position Control
Precise Digital Clock Timer
Universal CPLD & Breadboard Experiment List of Experiments
Combinational Logic Circuit Experiment.
NOR gate circuit
NAND gate circuit
XOR gate circuit
Constructing XOR gate with NAND gate
The combination with basic gates
AND-OR-INVERTER (A-O-I) gate circuit
Comparator circuit
Comparator constructed with basic logic gates
Comparator constructed with TTL IC
Schmitt gate circuit
Open-collector gate circuit
High voltage/current circuit
Constructing an AND gate with open collector gate
Half-adder and full-adder circuit Construct HA with basic logic gates
Half-subtractor and full-subtractor circuit Subtractor circuit constructed with basic logic gates
Bit parity generator circuit Bit parity generator constructed with XOR gates
Constructing a 4-to-10 decoder with TTL IC
The switch characteristics of TTL level conversion circuit
Arithmetical Logic/Tri-state & Code Converter Experiment.
CMOS FET tristate gate circuit
Truth table measurements
Constructing an AND gate with tristate gate.
Bidirectional transmission circuit
Half-adder and full-adder circuit
Full-adder circuit with IC
High-speed adder carry generator circuit
BCD code adder circuit.
Half-subtractor and full-subtractor circuit Full adder and inverter circuit
Arithmetic Logic Unit (ALU) circuit
Bit parity generator circuit Bit parity generator IC
Hex to Dec/Dec to Hex digital conversion
8-digit Dec-to-Hex conversion
8-bit Hex-to-Dec conversion
Encoder, Decoder & Multiplexer Logic Circuit Experiment
Encoder circuit
Constructing a 4-to-2 encoder with basic gates
Constructing a 9-to-4 encoder with TTL IC
Decoder circuit
Constructing a 2-to-4 decoder with basic gates
BCD-to-7-segment decoder
Demultiplexer circuit Constructing a 2-output
demultiplexer with basic logic gates
Digitally controlled analog multiplexer/ demultiplexer circuit
The switch characteristics of CMOS level conversion circuit
Flip-flop & Sequential Logic & Counter Circuit Experiment
Flip-flop circuits
Construct R-S flip-flop with basic logic gates
Construct D flip-flop with R-S flip-flops
Construct noise elimination circuit with R-S flip-flops
Construct J-K flip-flop with D flip-flops
The J-K flip-flop of delay and differential
Construct master-slave J-K flip-flops with dual R-S flip-flops
Construct shift register with D flip-flops
Preset left/right shift register.
J-K flip-flop counters
Asynchronous binary up counter
Asynchronous binary down counter
Asynchronous decade up counter
Synchronous binary counter
Synchronous binary up counter
Synchronous binary up/down counter
Johnson counter
Ring counter
Oscillator/Pulser; Load; Up/Down Counter Circuit Experiment
Constructing Random Access Memory (RAM) with D flip-flop.
64-bit Random Access Memory (RAM) circuit
Erasable Programmable Read Only Memory (EPROM) circuit
Asynchronous four-bit binary up counter (use of 7493 IC)
Preset able binary up/down counter
Preset able decimal up/down counter
Construct non-retrigger able circuit with the specialized CMOS IC
Construct retrigger able circuit with CMOS IC
Construct a variable duty cycle oscillator circuit with dual monostable multivibrators
Memory, Matrix LED & DAC/ADC & MCU Interface Circuit Experiment
Electronic EPROM (EEPROM) circuit
DAC0800 unipolar conversion circuit experiments
Bipolar output conversion circuit
ADC0804 8-bit SAC analog-to-digital converter experiment
Constructing dynamic scanning counter with single Chip microprocessor
Digital & Analog Timer, Pulse Generator Circuit Experiment.
Constructing oscillator circuit with basic logic gates
Resistor-capacitor multivibrator
Resistor-capacitor crystal multivibrator
Constructing oscillator circuit with Schmitt gate
Resistor-capacitor oscillator
Variable duty cycle resistor-capacitor oscillator
555 IC oscillator circuit
555 oscillator circuit
Voltage controlled oscillator circuit
Monostable multivibrator circuits
Low-speed monostable multivibrator circuits
Monostable ON/OFF delay circuit
Monostable ON/OFF timer circuit
Construct monostable multivibrator circuit with 555 IC.
Numerically-Controlled Oscillator (NCO) signal generator
Precise-frequency function generator
Variable-duty-cycle NCO signal generator
Variable-ON/OFF delay and difference control experiments
Precise 15-bit symmetric/asymmetric PWM generator
Ramp-compare/SAR/Dual-slope ADC Experiment
Simple R-2R unipolar output D/A converter experiments
8-bit digital-ramp A/D converter experiment
8-bit successive-approximation A/D converter experiment
8-bit dual-slope A/D converter experiment
Keyboard & Display for Stepping Motor Position Control
Stepper motor position/speed control experiment.
Precise Digital Clock Timer
Clock experiment.
Timer experiment
Universal CPLD & Breadboard Experiment
Create block diagram/schematic file in QUARTUS
16-bit Hex counter
16-bit decimal counter
16-bit presentable decimal up/down counter
16-bit scanning controller for 7-segment display
16-bit up/down counter and its indication by a 7-segment display
Electronic music box
The traffic light with animation and time indication
Equipment Required
Hand-held Digital Multimeter
Digital Storage Oscilloscope (DSO) : 100MHz bandwidth, 1GS/s sampling rate and FFT function or better.
Accessories: Connecting Wire: 2 set, User Manual: 2 Nos, Standard Accessories.
