# Why is it called a flip flop?

All you need to do to figure out why we call them "flip-flops" is to walk around in a pair of them for just a little while. Because of how they're made, the rubber soles slap against the bottom of your feet as you walk, making a flip-flop, flip-flop sound.
A.

### How does a SR flip flop work?

A basic NAND gate SR flip-flop circuit provides feedback from both of its outputs back to its opposing inputs and is commonly used in memory circuits to store a single data bit. Then the SR flip-flop actually has three inputs, Set, Reset and its current output Q relating to it's current state or history.
• #### What is a JK flip flop?

The JK flip flop is basically a gated SR flip-flop with the addition of a clock input circuitry that prevents the illegal or invalid output condition that can occur when both inputs S and R are equal to logic level “1”.
• #### What is a flip flop shoe?

Flip-flops are a type of sandal, typically worn as a form of casual wear. They consist of a flat sole held loosely on the foot by a Y-shaped strap known as a toe thong that passes between the first and second toes and around both sides of the foot.
• #### What is clocked RS flip flop?

A simple clocked SR flipflop built from AND-gates in front of a basic SR flipflop with NOR-gates. Obviously, the values at the R and S inputs are gated with the clock signal C. Therefore, as long as the C signal stays at 0 value, the flipflop stores its value.
B.

### Is RS flip flop and SR flip flop same?

They are theoretically the same. However, there is a significant practical difference. Recall from the truth table of an SR flip-flop that its state is indeterminate when both inputs at R and S are high. In RS flip-flop, the reset input has higher priority and in an SR flip-flop, the set input has a higher priority.
• #### What is the difference between JK flip flop and SR flip flop?

The main difference between a JK flip-flop and an SR flip-flop is that in the JK flip-flop, both inputs can be HIGH. When both the J and K inputs are HIGH, the Q output is toggled, which means that the output alternates between HIGH and LOW. Thereby the invalid condition which occurs in the SR flipflop is eliminated.
• #### What is clocked RS flip flop?

A simple clocked SR flipflop built from AND-gates in front of a basic SR flipflop with NOR-gates. Obviously, the values at the R and S inputs are gated with the clock signal C. Therefore, as long as the C signal stays at 0 value, the flipflop stores its value.
• #### What is the function of a SR latch?

The simplest bistable device, therefore, is known as a set-reset, or S-R, latch. To create an S-R latch, we can wire two NOR gates in such a way that the output of one feeds back to the input of another, and vice versa, like this: The Q and not-Q outputs are supposed to be in opposite states.
C.

### What is the difference between a JK flip flop and an SR flip flop?

The main difference between a JK flip-flop and an SR flip-flop is that in the JK flip-flop, both inputs can be HIGH. When both the J and K inputs are HIGH, the Q output is toggled, which means that the output alternates between HIGH and LOW. Thereby the invalid condition which occurs in the SR flipflop is eliminated.
• #### How can we eliminate race around condition?

Steps to avoid racing condition in JK Flip flop:
1. If the Clock On or High time is less than the propagation delay of the flip flop then racing can be avoided. This is done by using edge triggering rather than level triggering.
2. If the flip flop is made to toggle over one clock period then racing can be avoided.
• #### What is meant by excitation table?

In electronics design, an excitation table shows the minimum inputs that are necessary to generate a particular next state (in other words, to "excite" it to the next state) when the current state is known.
• #### What is the definition of half adder?

The half adder is an example of a simple, functional digital circuit built from two logic gates. The half adder adds two one-bit binary numbers (AB). The output is the sum of the two bits (S) and the carry (C). Note how the same two inputs are directed to two different gates.

Updated: 6th October 2019