This trainer should be a classic digital circuit training system, which should be suitable for experiment teaching courses such as 'Digital electronics technique' and 'Electronic circuit'  It should adopt portable box type design with aluminum profile frame, easy to be carried for flexible teaching purpose.
The basic service area should come with DC power source, single pulse, fixed pulse source, logic level input, indicators, nixie tube display, dial switch, etc.
The open experiment area should be provided with multiple IC sockets and electronic component insertion sockets to achieve various experiment extension and course design.
 Power supply –

• Input 220V±10%, 50Hz
• DC Output: +5V/1A, -5V/1A, +15V/500mA, -15V/500mA, with rocker switches
• Manual single pulse circuit: Output single positive pulse / negative pulse, amplitude as TTL level
• Fixed frequency pulse source: Six-channel, output TTL level 1/10/100/1K/10K/100K Hz
• 12-bit logic level input switch: Input low level '0', high level '1' (as positive logic)
• 12-bit logic level indicator: Red/Green for high/low level
• Nixie tube display: 4-bit BCD coding display circuit formed by seven-segment nixie tube
• Potentiometer: Adjustable, 1K/10K/47K
• Dial switch: 2-bit binary BCD

 Experiment extension area –

• 40-pin socket
• 28-pin socket
• DIP 8-pin socket x4
• DIP 14-pin socket x6
• DIP 16-pin socket x4
• Plug area for component insertion

 Accessories:

• 3-pin power cord
• Set of connection cables 2mm
• Digital Multimeter