Digital Electronics (Module 1)

2's Compliment of 100011101

• 1000001110

• 011100011

• 011110011

• 100011111

Each symbol in the number is called a __________

Match the following number systems

• 0,1,2,3,4,5,6,7

• Octal

• 0,1

• Binary

• 0,1,2,3,4,5,6,7,8,9, A, B, C, D, E, F

• Decimal

• 0,1,2,3,4,5,6,7,8,9

• Hexa Decimal

Reorder the following Binary numbers

• 0101

• 1011

• 0011

• 1101

• 1001

Convert the Binary number to Gray code

1110001110 = 10​ (a)   100 ​ (b)   001.

• 1
• 0

De Morgan's Theorem. (A+B)' = ​ (a)   and (AB)' = ​ (b)  

• A'.B'
• A' + B'
• A'+B
• (AB)'

Types of Binary codes

c

d

e

f

a

8241

5153

5211

2421

Gray

Excess -3

Match the following

• 10101

• Binary of 25

• 0101 1000

• Gray code of 25

• 0010 0101

• 1's compliment of 25

• 00110

• Excess -3 code 25

• 11001

• BCD of 25

Add the following BCD numbers

0011 0000 0101 + 1000 1000 0001

• 1011 1000 0110

• 1011 1000 1001

• 0001 0001 1000 0110

• 0001 0010 1000 0110

OR gate function is