Questions

Qatar to withdraw from OPEC as of Jan 2019. OPEC, The Organization of the Petroleum Exporting Countries is an intergovernmental organisation of 14 nations, founded in 1960 in Baghdad, Iraq.

Its members are Qatar, Saudi Arabia, Iran, Iraq, Indonesia, Venezuela, Nigeria, Libya, United Arab Emirates, Algeria, Kuwait, Ecuador, Angola, Gabon.

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.