The Digital circuit experiment board is introduced in this manual as NX-4i Versatile
Digital Circuit Experiment Board. This board contains many nescessary tools for supporting
all basic digital circuit experiment and more complex.
3.1 Features of the NX-4i experiment board
The main features of NX-4i board is :
l Dual DC power supply
±12V 1A and ±5V 1A with Short circuit protection and indicators
l 8-ch. Logic switch with indicators
l 16-ch. Logic monitor
l 2-Debounce switch
l 3-State TTL Logic probe
Indicate Hi-Lo Logic and Pulse
l Function generator
1Hz to 100kHz frequency output.
Button Selection with Frequency range indicators.
3 Waveform selection :
Sine, Square and Triangle
Complete with a TTL output
l Binary to Hexadecimal decoder to four 7-segment LEDs
l 8-Bit Analog to Digital Converter
Maximum input voltage +5V
l Adjustable 0-5V Voltage reference source
for Analog to Digital Conversion experiment
l 8-Bit Digital to Analog Converter
Output of 0 to +5V R-2R ladder type