Digital Electronic Trainers EE-4400

Digital Electronic Trainers EE-4400

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The EE-4000 Digital Electronics Trainers is a series of 10 Experiment Circuits Modules designed to fit our ULT-3000 Universal Lab Trainer (Analog and Digital Lab Trainer) in place of the standard breadboard module. Each experiment circuit schematic is clearly printed on the top panels of the modules.

This trainer complete with needed power supplies and source generators needed to carry out the digital electronic experiments complete system with connecting leads, experimental and teacher manuals.

An experiment manual accompanies the modules detailing eighteen (18) experiments in an easy to follow step-by-step manner. These benefit the student in that valuable lab time can now be devoted to studying the Digital Electronics.

Main Unit ULT-3000

The main unit incorporates all necessary equipment for use with the plug-on training modules. Power supply, signal generator, and a wide range of logic switches and indicators are all built-in.

The DC power supply provides fixed ±5V at 1A, ±12V at 1A, and a variable ±1.5V~±20V at 1A The function generator & signal generator provides clock signals from 1Hz to 1MHz in 6 ranges. The main unit is also supplied with a removable 1680 tie point universal breadboard for general experimentation and prototyping circuits rather than wiring them up.

Lab 1: Basic Logic Functions

  1. To study the basic logic functions AND, OR, INVERT, NAND, and NOR.
  2. To study the representation of these functions by truth tables, logic diagrams, and Boolean algebra.

Lab 2: Boolean Algebra and Simplification of Logic Equations

  1. To study the methods of representing and simplifying the logic equations by using Boolean algebra.

Lab 3: DeMorgan's Theorem

  1. To simplify and modify Boolean logic equations by means of DeMorgan's theorem

Lab 4: TTL NAND / NOR Gates Definitions and Operation

  1. To study the operation of the TTL gate.
  2. To determine the loading rules for the TTL gate.
  3. To define the logic levels 1 and 0.
  4. To determine the noise immunity of the TTL gate.
  5. To compare positive and negative logic.
  6. To study the effect of capacity loading upon TTL switching rates

Lab 5: The "Exclusive-OR" and Its Applications

  1. To study methods of generating the exclusive-OR function.
  2. The half-adder and half-subtractor.
  3. Binary comparators.
  4. Parity generators.

Lab 6: Full-Adder and Full-Subtractor

  1. To study methods of generating circuits that performs the arithmetic operations of full addition and full subtraction.

Lab 7: Bi-stable or Flip-Flop (FF)

  1. To study the characteristics and operation the various types of bi-stables.

Lab 8: Binary Counters and The Binary Number System

  1. To study the operation of binary counters.
  2. To study binary counting and the representation of numbers in the binary number system.

Lab 9: Divide-by-N Counters and Decade Counters

  1. To study counters that divide the incoming frequency by counts other than binary powers and which use cascaded T flip-flops.
  2. To study the count states of these counters.
  3. To study the weighted BCD decade counters 8421 and 2’421.
  4. To study the unused states of the 8421 counter.

Lab 10: Shift Registers and Ring Counters

  1. To study the shift register and its properties.
  2. To study ring counters.
  3. To study the twisted ring counter.

Lab 11: Pulse Forming and Shaping; The Schmitt Trigger

  1. To study the transistor astable multivibrator.
  2. To study the IC astable multivibrator.
  3. To study the pulse stretcher/monostable.
  4. To study the Schmitt trigger.

Lab 12: Integrated-Circuit Timers The 79122, 79121, and 555

  1. To study the properties of the 74122 retriggerable resettable monostable multivibrator.
  2. To study the properties of the 74121 monostable multivibrator.
  3. To study the properties of the 555 timer.

Lab 13: Decoding and Encoding

  1. To study the operations of decoding of electronic counters.
  2. To study the operations of encoding and code conversion.

Lab 14: Random-Access Memory; (RAM) Scratch Pad Memories

  1. To study the basic principles of semiconductor memories.
  2. To study the operation of an MSI (TTL) 64-bit memory cell.

Lab 15: The Operational Amplifier

  1. To study the operational amplifier as a precision analog voltage amplifier.
  2. To study the operational amplifier as a multiplying and summing amplifier.
  3. To study the operational amplifier as a comparator.
  4. To study the operational amplifier as an integrator.

Lab 16: Digital-To-Analog (D/A) and Analog-to-Digital (A/D) Conversion

  1. To study the binary weighted ladder method of D/A conversion.
  2. To study the comparison method of A/D conversion.

Lab 17: Complementary Symmetry MOS (CMOS) ­Principles and Characteristics

  1. With complementary symmetry MOS (CMOS) to study logic operations.
  2. With complementary symmetry MOS (CMOS) to study noise immunity.
  3. With complementary symmetry MOS (CMOS) to study dissipation.

Lab 18: Complementary Symmetry MOS (CMOS) TTL Interface

  1. To study the problems and methods of interfacing the CMOS logic family with the bipolar TTL logic family.


1. DC Power Supplies Module

  • Fixed Output: +5V/1A, -5V/0.5A, +12V/0.5A, -12V/0.5A
  • Variable Output: +0V ~ +25V/1A, -0V to -25V/0.5A
  • All power supplies are short circuit protected.

2. AC Power Supplies Module

  • 19V–15V–9V–0V–9V–15V-19V

3. Function Generator (2 Channels) & Clock Generator (2 Channels)

  • Sine, Triangle and Square waveform output
  • Frequency range : 1Hz to 1MHz in 6 decades
  • With fine adjust, Amplitude and DC offset control
  • Clock output 1Hz to 1MHz in 6 decades
  • Six frequency ranges:
  • 1Hz to 10Hz
  • 10Hz to 100Hz
  • 100Hz to 1KHz
  • 1KHz to 10KHz
  • 10KHz to 100KHz
  • 100KHz to 1MHz
  • Sine wave output: 0 to 12V peak to peak variable
  • Triangle wave output: 0 to 8V peak to peak variable
  • Square wave output: 0 to 12V peak to peak variable

4. Solderless Breadboard Module

  • Interconnected with 2712 tie points nickel plated contact, fits all components with DIP sizes and solid wire AWG#22-30 (0.30.8mm).

5. TTL/CMOS Selection Switch

  • Select TTL (+5V) or CMOS (12V) Mode for data switches

6. 2-Single Shot Pulse Module

  • 2 units push-buttons debouncer switches
  • 80µS Positive & Negative Pulse

7. Two digits of 7-segment LED Display Module

  • Output numerical displays


  • Segment Identification


8. 16-bit LED Indicators with buffer Module

  • Sixteen LED's separate input terminals.
  • The LED lighted up when input at "HI level", and turned off when no input or at "LO level"

9. 16-bit HI/LO Data Output Switches Module

  • Sixteen slide switches’ separate input terminals.
  • When slide switch set at "down" position, the output is LO level; it will be HI level while setting at "up" position.

10. 3-State Logic Probe Module

  • HI, Float & LO Level LED Logic Indicator

11. Speaker Module

  • 8 Ohm, 0.25W With Buffer

12. Digital DC Volt Meter

  • 4 ½ Digits LED display
  • Four voltage ranges :
  • 0V to 199.9VDC
  • 0V to 19.99VDC
  • 0V to 1.999VDC
  • 0V to 199.9mVDC
  • Input Impedance: 10Mohm for any range

13. Adaptors Interface Module

  • 2mm & 4mm Adaptor Interface Socket to turn pins socket

The ULT-3000 is shipped with a comprehensive Experiments & Instruction manaul in CD Format a power cord.

Power Supply : 240VAC, 50Hz (Fused Protected)

Dimensions : (W x D x H) 310 x 260 x 90mm

Weight : 3.5 kgs

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