Configuration 
3/07  UDC3500 Universal Digital Controller Product Manual  101 
Function Prompt  
Lower Display 
Selections or  
Range of Setting  
Upper Display 
Parameter  
Definition 
 
NAND 
NAND—NOT AND is the best way to describe the 
NAND gate. It is an inverted AND gate. When Input 
A and Input B are ON
, the Output is OFF. 
 
NAND
INPUT A
INPUT B
OUTPUT (Y)
 
A
 
B
0 
1 
0 
0
0
1
 
1
1
01
1
1
 
 
 
X OR 
X OR (EXCLUSIVE OR)—The operation of this gate 
is, as its name implies, Exclusively “OR”. If Input A 
OR Input B is ON
, the Output will be ON. If Input A 
and Input B are ON
 or OFF, the Output will be OFF. 
 
X OR 
INPUT A
INPUT B
OUTPUT (Y) 
A B
0
1
0
0
0
1
1
0
01
1
1
 
 
 
XNOR 
X NOR  EXCLUSIVE NOR)—The EXCLUSIVE NOR 
is an inverted EXCLUSIVE OR. If Input A and Input 
B are ON 
or OFF, the Output will be ON. 
 
XNOR 
INPUT A
INPUT B
OUTPUT (Y)
 
A B
0
1
0
0
0
1
1
0
0
1
1
1