Introduction to Flipflop Types of Flipflop Applications of Flipflop Introduction to Register Types of Registers Applications of Register

2. OVERVIEW
 Introduction to Flipflop
 Types of Flipflop
 Applications of Flipflop
 Introduction to Register
 Types of Registers
 Applications of Register
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3. I. INTRODUCTION TO FLIP FLOPS
Basic memory element of a digital computer
Stores 1 bit of information with a 0 or 1
Also called binary or toggle or latch
A bi stable device
Have two output- one complement of another
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ii. Types of flip flop
RS D Jk T Master slave

4. II. TYPES OF FLIPFLOP (CONTINUED)
1. RS flip flop
 Consists of three inputs:
•S(set)
•R(Reset)
•C(clock)
 Has output Q and a compliment output Q’
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Fig. Logic symbol for RS Flipflop Fig. Truth table

5. II. TYPES OF FLIPFLOP (CONTINUED)
2. D flipflop
 Flip-flop with single data input D and clock C
 Also called delay flip-flop
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Fig. Logic symbol of D flip-flop
Fig. Truth table

6. II. TYPES OF FLIPFLOP (CONTINUED)
3. JK flipflop
 Widely used flipflop
 J and K are two inputs used
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Fig. Logical symbol Fig. Truth table

7. II. TYPES OF FLIPFLOP (CONTINUED)
4. T flipflop
 Also called toggle flipflop
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Fig. Logical symbol and truth table

8. II. TYPES OF FLIPFLOP (CONTINUED)
5. Master slave flipflop
 Consist of two flipflops
o Master
o slave
 Helps in avoiding racing condition in jk flipflop where it can be triggered only once
within a clock cycle
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9. III. APPLICATIONS OF FLIPFLOP
 Wide use in registers for storage
 To count the number of clock pulses in digital counters
 In basic computer working design
 As counter
 As frequency dividers (divide frequency of periodic waveform)
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10. IV. INTRODUCTION TO REGISTER
 Group of flipflops with each flipflop capable of storing one bit of information
 May have some combination gates too performing some data processing task
 Various types of flipflops available commercially but the simplest is one that consists flipflops
with no external gates
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Fig. Register
v. Types of Registers
Shift register Binary counter

11. V. TYPES OF REGISTERS (CONTINUED)
1. Shift register
 A register capable of shifting its binary info in one or both directions
 All flipflops receive a common clock pulse that initiate shift
 Two types of shift register
 Unidirectional shift register: register capable of shifting in one direction
 Bidirectional shift register: register that can shift in both direction
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Fig. Shift register

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V. TYPES OF REGISTERS (CONTINUED)
2. Binary counters
 A counter that follows the binary number sequence
 A n nit binary counter is a register of n flipflop and the gates associated to it
 Binary counter circuit usually employs flipflops with complementing capabilities,
 so t or jk flipflop is mostly used
 Figure- 4 bit synchronous binary counter

13. VI. APPLICATION OF REGISTERS
 Temporary storage
 Data transferring
 Data manipulation
 As counters
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14. Thank you..
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