**SWITCHING THEORY & LOGIC DESIGN**

1. A
group of four bits is known as

__nibble.__
2. The
number system with radix 2 is known as

__binary.__
3. The
base or radix a Hexadecimal number system is

__16.__
4.
A
half-adder can be constructed using 2 two input logic gates one of them is
AND gate the other is

__OR gate.__
5.

**is the most efficient method for detecting and correcting codes.**__Hamming code__
6.

**is the size of the decoder required to implement 3 Variable Boolean Function.**__3 to 8 decoder__
7.

**is used in k-map to represent the data.**__Gray code__
8.

**are the 3 types of sequential programmable devices.**__Sequential PLD, Complex PLD, FPGA__
9.

**is the characteristic equation for JK F-F.**__JQ~+K~Q__
10.
Write
about latches?

**Ans**: The most basic types of F-Fs operate with signal levels and are referred to as latches.

11. Define F-F s?

**Ans:**The storage elements used in clocked sequential circuits are called flip-flops.

12. What
is the principle of duality?

**Ans:**Any theorem or Identity in switching algebra remains true if 0 and 1 are swapped and are swapped throughout.

13. What is the
difference between mealy model and Moore model?

**Ans:**In the Malay model, the output is a function of both the present state and input. In the Moore model, the output is a function of the present state only.

14.

**is a 4 bit binary adder.**__74 X 283__
15.
74 X 138 has

**.**__3 enable inputs__
## 0 comments:

## Post a Comment