2's complement of binary number 0101 is 1011 1111 1101 1110 1's complement of 01

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Correct Answer

1011

Explanation

1's complement of 0101 is 1010 and 2's complement is 1010+1 = 1011.

Digital Electronics problems

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1. 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

6. In a ripple counter,
Options
A. whenever a flip flop sets to 1, the next higher FF toggles
B. whenever a flip flop sets to 0, the next higher FF remains unchanged
C. whenever a flip flop sets to 1, the next higher FF faces race condition
D. whenever a flip flop sets to 0, the next higher FF faces race condition

7. Which device has one input and many outputs?
Options
A. Multiplexer
B. Demultiplexer
C. Counter
D. Flip flop

8. The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is
Options
A. - 256
B. - 128
C. - 255
D. - 127

9. For the minterm designation Y = ? m (1, 3, 5, 7) the complete expression is
Options
A. Y = A BC + A B C
B. Y = A B C + A B C + ABC + A BC
C. Y = A B C + A B C + ABC + A BC
D. Y = A B C + ABC + A BC + A BC

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