Flip flops and registers

Introduction to Flipflop

Types of Flipflop

Applications of Flipflop

Introduction to Register

Types of Registers

Applications of Register

1. FLIPFLOPS AND REGISTERS

2. OVERVIEW Introduction to Flipflop Types of Flipflop Applications of Flipflop Introduction to Register Types of Registers Applications of Register 9/7/2018

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 9/7/2018 ii. Types of flip flop

4. ii. Types of F lipflop (Continued) RS flip flop Consists of three inputs: S(set) R(Reset) C(clock) H as output Q and a compliment output Q’ 9/7/2018 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 9/7/2018 Fig. Logic symbol of D flip-flop Fig. Truth table

6. ii. Types of Flipflop (Continued ) JK flipflop Widely used flipflop J and K are two inputs used 9/7/2018 Fig. Logical symbol Fig. Truth table

7. ii. Types of Flipflop (Continued ) 4. T flipflop Also called toggle flipflop 9/7/2018 Fig. Logical symbol and truth table

8. ii. Types of Flipflop (Continued ) 5. Master slave flipflop Consist of two flipflops Master slave Helps in avoiding racing condition in jk flipflop where it can be triggered only once within a clock cycle 9/7/2018

9. iii. Applications of flipflop Wide use in registers for storage T o count the number of clock pulses in digital counters I n basic computer working design A s counter A s frequency dividers (divide frequency of periodic waveform) 9/7/2018

10. iv. Introduction to register G roup of flipflops with each flipflop capable of storing one bit of information M ay 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 9/7/2018 Fig. Register Types of Registers

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 9/7/2018 Fig. Shift register

12. 9/7/2018 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 9/7/2018

14. Thank you.. 9/7/2018