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To change an upper case character to a lower case character in ASCII, the correct mask and operation should be:

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Important Questions on Computer Organisation

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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 19
The number of flip-flops needed to construct a binary modulo N counter is:
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 20
Multiplexing of data/address lines in an 8085 microprocessor reduces the instruction execution time. This statement is:
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 21
Which of the following is unipolar, difficult to fabricate, has very high speed, and offers good resistance to radiation?
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 22
What is A*A, if * is a Boolean operation defined by A*B = AB + A'B'?
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 23
If C = A*B, then  C*A is:
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 24
The Boolean variables A, B and C that solve the Boolean equations AB + A C = 1 and AC + B = 0 simultaneously is:
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 25
If a particular idea can be implemented in hardware or software, the factor(s) that favour hardware implementation is/are:
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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 26
A terabyte is 2 for the power of?