DLD Unit 1 _ 2

1’s complement of 1011101 is ____________

• 0101110

• 1001101

• 0100010

• 1100101

2’s complement of 11001011 is ________

• 01010111

• 11010100

• 00110101

• 11100010

On subtracting (01010)2 from (11110)2 using 1’s complement, we get ____________

• 01001

• 11010

• 10101

• 10100

On subtracting (101011)2 from (111001)2 using 2’s complement, we get ____________

• 1101100

• 0011100

• 11010101

• 11010111

1’s complement can be easily obtained by using _________

• Comparator

• Inverter

• Adder

• Subtractor

The advantage of 2’s complement system is that _________

• Only one arithmetic operation is required

• Two arithmetic operations are required

• No arithmetic operations are required

• Different Arithmetic operations are required

Binary coded decimal is a combination of __________

• Two binary digits

• Three binary digits

• Four binary digits

• Six binary digits

The decimal number 10 is represented in its BCD form as __________

• 10100000

• 01010111

• 00010000

• 00101011

Add the two BCD numbers: 1001 + 0100 = ?

• 10101111

• 01010000

• 00010011

• 00101011

Carry out BCD subtraction for (68) – (61)

• 00000111

• 01110000

• 100000111

• 011111000