Tuesday, 1 May 2012

Digital Electronics 2


Chapter 1 : Flip Flop

1 Flip-flop & Register
~ Latches
~ Edge-triggered flip-flops
~ Master-slave flip-flops
~ Flip-flop operating characteristics
~ Flip-flop applications


- Logic circuit without memory element
- Cannot remember previous output
- Output will change every time input change

- Latches and flip-flops are the basic single-bit memory elements used to build sequential circuit  with one or two inputs/outputs, designed using individual logic gates and feedback loops.

nLatche   –  The output of the latch depends on its current inputs and on its previous output and it change of      state can happen at any time when it input changes.                                                                                                             

n Flip-Flops The output of a flip-flop also depends on current inputs and its previous output but the change of state occurs at specific times determined by a clock input.

                S-R Latch
                Gate S-R Latch
                Gate D-Latch
                Edge-Triggered Flip-Flop (S-R, J-K, D)
                Asynchronous Inputs
                Master-Slave Flip-Flop
                Flip-Flop Operating Characteristics
                Flip-Flop Applications

nType of temporary storage device that has two stable (bi-stable) state
nSimilar to flip-flop – the outputs are connected back to opposite inputs
nMain difference from flip-flop is the method used for changing their statech, Gated/Enabled S-R la
nS-R lattch and Gated D latch


Cerita Lucu

Cerita Teladan


Basic Electronics

Electronics Circuit | Electronic Schematics

Fadzilah Kamsah