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Digital Electronics

Digital Electronics
The 1’s complement of 11010111 is

 00101000
 10101000
 10101000
 11101000

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Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 16 × 16
 32 × 8
 64 × 4
 256 × 1

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Digital Electronics
The output of a NAND gate is low

 only when all the inputs are low
 only when at least one input is high
 only when all the inputs are high
 only when at least one input is low

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Digital Electronics
The hex address of the 256th memory location is

 001FF
 00FFF
 000FF
 00100

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Digital Electronics
In VLSI, the number of gate circuits per chip is

 10,000 to 99,999
 < 10,000
 50,000 to 99,999
 > 10,000

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Digital Electronics
In ULSI, the number of gate circuits per chip is

 50,000 to 99,999
 1,00,000 to 10,00,000
 > 1,00,000
 > 50,000

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