Diagram in the front panel with similar distribution that the elements in the real unit.
Steel box.
In this unit, the elements are separated in two parts: lefthand part for analog to digital conversions, and right hand part for digital to analog conversions.
Analog/ Digital converter board. Digital/ Analog converter board.
Signal generator board, with 100 to 330 mF capacitors, 10 to 50K potentiometers and 1 to 100K resistors.
Female and male connectors, interconnections.
Power supply.
LPF-Low Pass Filter: 2nd order low pass filter, needed to convert analog signals to digital.
Adding: this module makes sum of two analog signals.
Sample/ Hold: this module holds the signal during the conversion. The input is E, and the output is S. The digital S/ H control input defines the operation mode: hold or sample.
Comparator: inputs E+ and E- are compared, and give the result in the digital output S: if E+ > E-, S will be at high level. The gate OR inverts the input IN, to finally give the result of bit operation OUT= S+ NOT ( IN) .
Clock: this module generates two digital clocks, CLK1 ( 245 Hz) and CLK2 ( 250 kHz) .


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Teachingequipment.
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