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Digital Logic Lab Trainer DLLT-1300 The DLLT-1300 Digital Logic Lab Trainer is a comprehensive and self-contained system suitable for testing and experimentation with a range of electronics circuits. Features Suitable for basic logic gate, combinational / assembled logic, sequential logic, and microprocessor circuit experimentation and design. Ideal tool for learning the basics of digital logic circuits. Integrated training system, with complete curriculum. Comprehensive power supply, signal supply, and testing devices for convenient experimentation. Complete with Computer Interface : Serial Interface, Centronic Interface & USB Interface 50MHz Auto Ranging Frequency Counter Digital DC Voltmeter Expandability and flexibility of experiments greatly increased by large breadboard. All experiment modules equipped with an 8-bit DIP switch for fault simulation. Use with TTL, CMOS, NMOS, PMOS and ECL circuits. All supplies equipped with overload protection. 13 experiment modules form basis for over 60 fully documented experiments.     DLLT-1300 Main Unit The main unit incorporates all necessary equipment for use with the thirteen experiments modules. Power supply, signal generator, frequency counter, digital voltmeter and a wide range of logic switches and indicators are all built-in. The DC power supply provides fixed +5V at 1A, -5V at 0.3A, ±12V at 0.3A, and a variable ±1.5V ~ ±23V at 0.5A. The signal generator provides clock signals from 1Hz to 1MHz in 6 ranges.   DLLT-1300 Experiment Modules Thirteen modules form the basis for over 60 experiments detailed in the comprehensive experiment manual. Each module contains the experiment circuit which is clearly illustrated by a circuit diagram on its top panel. Switch faults are also incorporated into the modules for simulating fault situations.   DLLT-EM01 Basic Logic Gates Experiment Module DLLT-EM02  Assembled Logic Circuits (1) Experiment Module DLLT-EM03  Assembled Logic Circuits (2) Experiment Module DLLT-EM04 Assembled Logic Circuits (3) Experiment Module DLLT-EM05 Assembled Logic Circuits (4) Experiment Module DLLT-EM06 Assembled Logic Circuits (5) Experiment Module DLLT-EM07 Clock Generator Circuit Experiment Module DLLT-EM08 Sequential Logic Circuits (1) Experiment Module DLLT-EM09  Sequential Logic Circuits (2) Experiment Module DLLT-EM10 Memory Circuits (1) Experiment Module DLLT-EM11  Memory Circuits (2) Experiment Module DLLT-EM12 Converter Circuits (1) Experiment Module    DLLT-EM13 Converter Circuit (2) Experiment Module   The full list of experiments performed using the above modules and detailed in the experiment manual are:          1. Basic Logic Gates Experiments 1.      Introduction to logic and switches 2.      Logic gates circuit experiments 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 experiments a. TTL logic circuit b. CMOS logic circuit 4.      Voltage/current measurement experiments a. TTL I/O Voltage/current output measurement b. CMOS I/O Voltage/current output measurement 5.      Basic logic gate transmission delay measurements a. TTL logic gate transmission delay measurements b. Schmitt gate transmission delay measurements c. CMOS logic gate transmission delay measurements 6.      Basic logic gate characteristics a. AND gate characterisitics b. OR gate characterisitics c. NOT gate characteristics d. NAND gate characterisitics e. NOR gate characteristics f. XOR gate characteristics 7.      Interfacing between logic gates a. TTL to CMOS interface b. CMOS to TTL interface            2. Assembled Logic Circuits Experiments 1.      NOR gate circuit experiment 2.      NAND gate circuit experiment 3.      XOR gate circuit experiment a. with NAND gate b. with basic equations 4.      A-0-1 gate circuit experiment 5.      Comparator circuit experiments a. with basic logic gates b. with TTL comparator IC 6.      Schmitt gate circuit experiment 7.      Open collector gate circuit experiment a. High Voltage/current driver circuit b. Constructing an AND gate with open collector gate 8.      Three-state gate circuit experiments a. Truth table experiment b. Constructing an AND gate with three-state gate c. Bidirectional transmission circuit 9.      Half adder and full adder experiments a. with basic logic gates b. Full adder circuit c. High-speed adder carrier generator d. BCD code adder circuit 10.  Half subtractor and full subtractor experiments a. with basic logic gates b. with full adder and inverter circuit 11.  Arithmetic Logic Unit (ALU) circuit experiment 12.  Bit parity generator experiments a. with XOR gate b. with bit parity generator IC 13.  Encoder circuit experiments a. Constructing a 4 to 2-bit encoder with basic logic gates b. Constructing a 10 to 4-bit encoder with TTL IC 14.  Decoder circuit experiments a. Constructing a 4 to 2-bit decoder with basic logic gates b. Constructing a 10 to 4-bit decoder with TTL IC c. Decoding a 7-segment display with BCD code 15.  Multiplexer circuit experiments a. Constructing a 2 to 1-bit multiplexer with basic logic gates b. Using a multiplexer to create functions c. Constructing an 8 to 1-bit multiplexer with TTL IC 16.  Demultiplexer circuit experiments a. Constructing a 1 to 2-bit demultiplexer with basic logic gates b. Constructing a 1 to 8-bit demultiplexer with CMOS IC 17.  Digitally controlled analogue multiplexer/demultiplexer circuits a. Characteristics of analogue switches b. Bidirectional transmission with CMOS IC analogue switches            3. Clock Generator Circuit Experiments 1.      Constructing an oscillator circuit with basic logic gates 2.      Constructing an oscillator circuit with Schmitt gate 3.      Voltage Controlled Oscillator (VCO) circuit 4.      555 IC oscillator circuit experiments a. 555 oscillator circuit b. Voltage controlled oscillator circuit 5.      Monostable multivibrator circuit experiments a. Low-speed monostable multivibrator cicuits a-1. Non-retriggerable circuit a-2. Retriggerable circuit b. High-speed monostable multivibrator cicuits b-1. Non-retriggerable circuit b-2. Retriggerable circuit c. Constructing a monostable multivibrator with 555 trigger d. Constructing a non-retriggerable circuit with TTL IC e. Constructing a retriggerable circuit with TTL IC f. Constructing a variable duty cycle oscillator circuit with monostable multivibrator 6.      Sequential Logic Circuits Experiments 4.      Constructing an R-S flip-flop with basic logic gates 5.      Constructing a D flip-flop with an R-S flip-flop 6.      Constructing a T flip-flop with a D flip-flop 7.      Constructing a J-K flip-flop with an R-S flip-flop 8.      Constructing a shift register with a D flip-flop a. Serial-in serial-out shift register b. Serial-in parallel-out shift register c. Parallel-in serial-out shift register d. Parallel-in parallel-out shift register 9.      Preset left/right shift register circuit experiment 10.  Noise elimination circuit with R-S flip-flop 11.  Constructing counters with J-K flip-flop a. Asynchronous binary up-counter circuit b. Asynchronous decimal up-counter circuit c. Asynchronous divide-by-N up-counter circuit d. Asynchronous binary down-counter circuit e. Synchronous binary up-counter circuit f. Synchronous binary up/down counter circuit g. Preset synchronous binary up/down counter circuit h. Preset synchronous decimal up/down counter circuit i. Ring counter circuit j. Johnson's counter circuit          4. Memory Circuit Experiments 1.      Constructing Read Only Memory (ROM) with diodes 2.      Constructing Random Access Memory (RAM) with D flip-flops 3.      64-bit RAM circuit 4.      Erasable Programmable Read Only Memory (EPROM) circuit 5.      Electronically Erasable Programmable Read Only Memory (EEPROM) circuit 6.      Constructing a dynamic scanning counter with a single-chip microprocessor   5. Converter Circuits Experiments a.      Digital to analogue (D/A) converter circuit experiments a. Unipolar output converter circuit b. Bipolar output converter circuit b.      Analogue to digital (A/D) converter circuit experiments a. 8-bit converter circuit b. 3½-digit converter circuit   Specifications DLLT-1300 Main Unit Fixed DC Power Supply Voltage range: +5V, -5V, +12V and -12V Maximum current output: 1A for +5V rail, 300mA for others Output overload protection Variable DC Power Supply Voltage range: +1.5V ~ +22V, -1.5V ~ -22V Maximum current output: 0.5A Output overload protection Variable Clock Generator Six frequency ranges: 1Hz to 10Hz 10Hz to 100Hz 100Hz to 1kHz 1kHz to 10kHz 10kHz to 100kHz 100kHz to 1MHz Output level: independent and simultaneous TTL and CMOS, CMOS output range adjustable from +1.5V to +15V Preset Frequency Generator Preset frequencies: 1Hz 50/60Hz 1MHz Output level: independent and simultaneous TTL and CMOS, CMOS output range adjustable from +1.5V to +15V Line Signal Generator 50/60Hz Output Voltage: 6V rms Data Switches Two 8-bit DIP switches giving 16-bit TTL level output Four toggle switches, each with debounce circuit, TTL and CMOS outputs Pulser Switches Two sets, each having debounced TTL and CMOS, Q and /Q outputs Thumbwheel Switches Two-digit, BCD code output, common point input Logic Indicators 16 sets of independent LEDs, indicating high and low logic states Input impedance: <100kW Seven-Segment Displays Four sets of independent 7-segment displays, with BCD, 7-segment decoder/driver and decimal point input terminal, input with 8-4-2-1 code Logic Probe TTL and CMOS level, 3mm LED displays indicate high and low logic states Computer Interface Serial Interface, Centronics Interface & USB Interface Frequency Counter 50MHz Auto Ranging Frequency Counter Digital DC Voltmeter 4 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 Speaker 8W, 0.25W speaker with driver circuit Solderless Breadboard 1680 interconnected tie points, accepting all DIP devices, components with leads and solid wires of AWG #22-30 (0.3mm to 0.8mm) Accessories Power lead, connecting leads and user manual Power Supply 240V AC ±10% 50/60Hz Physical Characteristics (Main Unit) Dimensions: 465mm (width), 330mm (depth), 150mm (height) Weight: 6kg Physical Characteristics (Experiments Modules) Dimensions: 265mm (width), 200mm (depth), 50mm (height) Weight : 1.5kg each