1's complement of 0101 is 1010 and 2's complement is 1010+1 = 1011.
2. 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
Decimal number 1 = binary number 001 = ABC Decimal number 7 = binary number 111= ABC, Decimal number 3 = binary number 011= ABC Decimal number 5 = binary number 101= ABC . Hence result.