Digital Electronics
NAND. gates are preferred over others because these

provide maximum density in a chip.
consume least electronic power
have lower fabrication area
can be used to make any gate

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Digital Electronics
EBCDIC is abbreviated as

 Extended Binary Color Decimal Interchange Code
 Extended Binary Coded Dectation Interchange Code
 Extended Bit Coded Decimal Interchange Code
 Extended Binary Coded Decimal Interchange Code

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