19ECE301 - DIGITAL ELECTRONICS

Which number system has a base 16

• Hexadecimal

• Octal

• Binary

• Decimal

Which of these sets of logic gates are known as universal gates?

• XOR, NAND, OR

• OR, NOT, XOR

• NOR, NAND, XNOR

• NOR, NAND

The decimal equivalent of binary 10111 is ....

• 27

• 19

• 23

• 22

1's complement of 1011001 is.....

• 0100111

• 0101100

• 0100110

• 0110110

The excess-3 code for 584 is given by....

• 100010110111

• 100001110111

• 100010010110

• 100001010110

DeMorgan's Law states that.....

• (A+B)' = A'*B

• (AB)' = A' + B'

• (AB)' = A' + B

• (AB)' = A + B

The logical sum of two or more than two logical products is termed as.....

• OR operation

• POS

• SOP

• NAND operation

In which of the following base systems is 123 not a valid number?

• Base 10

• Base 8

• Base 16

• Base 3

ASCII code is a.....bit code.

• 8

• 7

• 2

• 1

The four bit corresponding to the binary code is 0011 is....

• 1100

• 0001

• 0011

• 0010