1's complement of 11100110 is 00011001 10000001 00011010 00000000 Replace 1 by 0

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Correct Answer

00011001

Explanation

Replace 1 by 0 and 0 by 1.

Digital Electronics problems

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1. In 2's complement representation the number 11100101 represents the decimal number
Options
A. +37
B. -31
C. +27
D. -27

4. In register index addressing mode the effective address is given by
Options
A. index register value
B. sum of the index register value and the operand
C. operand
D. difference of the index register value and the operand

5. The circuit of the given figure realizes the function
Options
A. Y = (A + B) C + DE
B. Y = A + B + C + D + E
C. AB + C +DE
D. AB + C(D + E)

9. A memory system of size 16 k bytes is to be designed using memory chips which have 12 address lines and 4 data lines each. The number of such chips required to design the memory system is
Options
A. 2
B. 4
C. 8
D. 18

10. 2's complement of binary number 0101 is
Options
A. 1011
B. 1111
C. 1101
D. 1110

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