Questions

Nullification is the legal theory that a state has the right to nullify (invalidate) any federal law that it deems unconstitutional

So far, there have not been any situations where this tactic has actually held up, though. In each case, nullification has failed.

The sources of state power are specifically outlined in the Tenth Amendment of the Bill of Rights.
When the Constitution was first proposed, many people were concerned about the federal government become too powerful. A group known as the anti-federalists pushed for a way to legally set aside certain rights and powers to individual states.

This amendment was added to satisfy the anti-federalists who were concerned that the Constitution would grant the federal government unlimited power.

The Tenth Amendment states that all powers that are not specifically given to the federal government are reserved to individual states.

A blocking assignment is one in which the statements are executed sequentially, i.e., first statement is executed and variable is assigned  a value then second is executed and so on. A non blocking assignment is  one in which statements occurs conturrently, only non blocking assignments should be used in sequential circuit.

e.g.

initial

begin

a=b; //blocking

c<=a; //nonblocking

d=c; // blocking

end

In this example firstly the value of b is assigned to a and this value is assigned to c only after execution of first statement. the second and the third statements are executed simultaneously, i.e. value a ais assigned to c and previous value if c is assigned to d.

214 BC

A needle has an eye through which we keep a thread and use for stitching clothes.