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Digital Electronics

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

 64 × 4
 32 × 8
 16 × 16
 256 × 1

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Digital Electronics
Excess-3 code is known as

Algebraic code
Weighted code
Self-complementing code
Cyclic redundancy code

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

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Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 OR
 NAND
 NOT
 AND

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Digital Electronics
LSI means

 Large Scale Invertor
 Large Symbol Invertor
 Large Symbol Integration
 Large Scale Integration

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Digital Electronics
An AND gate can be imagined as

 switches connected in parallel
 transistors connected in series
 transistors connected in paralle
 switches connected in series

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