Digital Logic Lab Trainer

Suitable for combination logic, sequential logic and microprocessor circuits design and experiments

Ideal tool for learning the basics of digital logic circuits Comprehensive power, signal supply and testing devices for convenient experiments Experiments are expandable and flexible with universal breadboard Capable of processing TTL, CMOS, NMOS, PMOS and ECL circuits  All supply units are equipped with overload protection for safety purpose All modules equipped with 8-bit DIP switch for fault simulations Individual keeping cases for all modules for easy storing and carrying

All signal generators have independent and simultaneous TTL and CMOS level output terminal.

Specifications:

Main Unit  Dual DC Power Supply Voltage range : +5V, 1.5A, -5V 0.3A, ±12V 0.3A

With output overload protection Adjustable DC Power Supply Voltage range: +1.5V to +15V Max.

current output : 0.5A 3With output overload protection  Standard Frequency

Frequency : 1MHz, 60Hz, 1Hz

Accuracy : ±0.01 ,1MHz

Fan out : 10 TTL load  Clock

Signal Generator Frequency : 1Hz to1MHz ,6 ranges,

a.1Hzto 10Hz

b.10Hz to 100Hz

c.100Hz to 1KHz

d.1KHz to 10KHz

e. 10KHz to100KHz

f. 100KHzto 1MHz

Fan out : 10 TTL load  Data Switch, 8-bit DIP switch x 2, 16-bit TTL level output  Toggle switch x 4, each with De bounce circuit

Fan out : 10 TTL load

Pulser Switch   2 sets of independent control output  Each set with Q, Q’ output, pulse width > 5ms

Each set of switch with De bounce circuit   Fan out : 10 TTL load  Line Signal Generator Frequency : 50Hz 60Hz

(2) Output voltage : 6Vrms

(3) With overload protection

8.  Thumbwheel Switch : 2-digit, BCD code output and common point input

9.  Logic Indicator  16 sets of independent LED indicates high  low logic state

(2) Input Impedance : les or equal100K ohms

10.Digital Displays

(1) 4 sets of independent 7-segment LED display

(2) With BCD, 7-segment decoder or drive r and DP input

(3) Input with 8-4-2-1 code11.Logic Probe

(1) TTL and CMOS level

(2) 5mm LED displays

(3) Lo and Hi LED display low or high logic state respectively

12. Speaker : 8 ohms, 0.25W speaker with driver circuit

13. Breadboard Modules: 1680 tie-point breadboard on top panel can be easily put into and taken off.

Experiment Modules

All 13 modules are equipped with an 8-bit DIP switch for fault simulation. Users learn how to solve various. Problems by setting the DIP switch to different positions.   Solutions for all fault test are listed in the experiment manual for user’s reference.  2mm plugs and sockets are used throughout the main unit and all modules.   Comprehensive experiment manual and instructor’s manual.   Module dimension: (255 x 165 x 30) mm.  Connection plugs are used on the modules to prevent accidental damages.   Individual keeping case for each module.

List of Modules  Basic Logic Gates Experiments Combinational Logic Circuit Experiments, Combinational Logic Circuit Experiments Combinational Logic Circuit Experiments, Combinational Logic Circuit Experiments   Combinational Logic Circuit Experiments Clock Generator Circuit Experiments

Sequential Logic Circuit Experiments  Sequential Logic Circuit Experiments Memory Circuit Experiments  Memory Circuit Experiments Converter Circuit Experiments

(1)Converter Circuit Experiments List of Experiments  Basic Logic Gates Experiments  Introduction to logic gates and switches

(2) Logic gates circuits

a. Diode Logic (DL) circuit

b. Resistor-Transistor Logic (RTL) circuit

c. Diode-Transistor Logic (DTL) circuit

d. Transistor-Transistor Logic (TTL) circuit

e. CMOS logic circuit

(3) Threshold voltage measurement

a. TTL threshold voltage measurement

b. CMOS threshold voltage measurement