Digital Circuit Trainer Box With 16-Bit Logic Level Input Switches Six-Digit High-Precision Digital Frequency Meter And Open Experiment Area
I. System Composition
- Power Supply: AC input: 220V±10%, 50Hz; Fixed DC output: 5V/2A, -5V/0.5A, ±12V/0.5A; Adjustable DC output: +1.2V~+27V (0.5A), -1.2V~-12V (0.5A)
- Manual single-pulse circuits (2 sets): Each set can output positive and negative pulses simultaneously with TTL level amplitude.
- Continuous pulse source: 0~1MHz.
- Fixed-frequency pulse sources (16 channels) with TTL level output: 1Hz, 2Hz, 10Hz, 100Hz, 200Hz, 300Hz, 400Hz, 500Hz, 700Hz, 800Hz, 1KHz, 10KHz, 100KHz, 250KHz, 500KHz, 1MHz.
- Timing pulse generation circuit and start-stop control circuit: It can generate four-channel pulse signals with the same pulse period as the input clock signal, and the four pulses differ from each other by one input clock cycle in sequence.
- Six-digit high-precision digital frequency meter: Measuring range 0-9.9999MHz, error <1Hz.
- 16-bit logic level input switches: Capable of inputting low level '0' and high level '1' (positive logic adopted).
- 16-bit logic level indicator lamps: The lit lamp indicates high level '1', and the unlit lamp indicates low level '0'.
- Nixie tube display: A BCD code decoding and display circuit composed of four 7-segment LED nixie tubes, plus 2 additional 7-segment LED nixie tubes, for display in experiments such as digital clock and calendar.
- Loudspeaker and driving circuit: Can be used as a sound generating device for clock chime, alarm and music playing.
- BCD code switches (2 sets): Provide BCD input.
- Logic pen: Red for high level; Green for low level; Orange for high impedance.
- Variable potentiometers (4 pieces) with resistance values of 1KΩ, 50KΩ, 100KΩ and 680KΩ respectively.
- Open experiment area: For extended experiments and curriculum design.
- Equipped with 2 pieces of 40-pin locking sockets, 3 pieces of 20-pin locking sockets, 4 pieces of 16-pin locking sockets and 4 pieces of 14-pin locking sockets, which can be inserted with various ICs of 8-pin to 40-pin (high-reliability round-pin integrated circuit sockets are also applicable).
- Discrete component plug-in area: For plugging in resistors, capacitors, zener diodes, diodes, triodes and other components for easy expansion.
II. Experimental Projects
- Logic function and test experiment of gate circuits
- Experiment of combinational logic circuits (half-adder, full-adder and logic operation)
- Flip-flop experiment (1) R-S, D, JK flip-flops
- Flip-flop experiment (2) Tri-state output flip-flops, latches
- Test and research of sequential circuits
- Experiment of integrated counters and registers
- Experiment of decoders and data selectors
- Experiment of waveform generators and monostable flip-flops
- Experiment of 555 timer circuit