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Digital Electronics

Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

128
6
64
32

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NAND or an X-NOR
 a NAND or an X-OR
 a NAND or an AND
 a NOR or an X-NOR

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

 Tristate
 Output is inverted
 Open collector output
None of these

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Digital Electronics
An n variable K-map can have

 n2 cells
 2n cells
  nn cells
 n2n cells

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Digital Electronics
Which of the following memories uses one transistor and one capacitor as basic memory unit

 DRAM
 SRAM
 Both SRAM and DRAM
 None

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

 0101 1111 0010 1100
 0100 1111 0010 1101
 0100 1110 0010 1101
 0100 1111 0010 1100

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