30-05-2012, 05:47 PM
FLIP-FLOP and ITS APPLICATIONS
This project is about the flip-flop and its applications in digital electronics. A flip-flop is a synchronous version of the latch. The first electronic flip-flop was invented in 1918 by William Eccles and F.W. Jordan. It was initially called the Eccles–Jordan trigger circuit and consisted of two active elements (vacuum tubes).Such circuits and their transistorized versions were common in computers even after the introduction of integrated circuits, though flip-flops made from logic gates are also common now .Today, the term flip-flop has come to mostly denote non-transparent (clocked or edge triggered) devices, while the simpler transparent ones are often referred to as latches. The word latch is mainly used for storage elements, while clocked devices are described as flip-flops.
There are a number of types of Flip-flops such as:
- Set-Reset Flip-flops, also known as SR Flip-flops
- Toggle Flip-Flops
- JK Flip Flops
- Master–slave pulse-triggered D flip-flop
- D Flip Flops
- Gated latches and conditional transparency
Flip-flops are essentially 1-bit storage devices .i.e. outputs can be set to store either 0 or 1 depending on the inputs. A flip-flop in combination with a Schmitt trigger can be used for the implementation of an arbiter in asynchronous circuits. Flip-flop integrated circuits (ICs) also exist that provide one or more flip-flops. We can use any one of the flip-flop type to build any of the others.
This is only an introduction of the topics I have to cover while preparing my term paper.