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what is it(information technology)

Information technology (IT) is the application of computers and telecommunications equipment to store, retrieve, transmit and manipulate data,[1] often in the context of a business or other enterprise.[2]
The term is commonly used as a synonym for computers and computer networks, but it also encompasses other information distribution technologies such as television and telephones. Several industries are associated with information technology, including computer hardware, software, electronics, semiconductors, internet, telecom equipment, engineering, healthcare, e-commerce and computer services.[3][a]
Humans have been storing, retrieving, manipulating and communicating information since the Sumerians in Mesopotamia developed writing in about 3000 BC,[5] but the term information technology in its modern sense first appeared in a 1958 article published in the Harvard Business Review; authors Harold J. Leavitt and Thomas L. Whisler commented that "the new technology does not yet have a single established name. We shall call it information technology (IT)." Their definition consists of three categories: techniques for processing, the application of statistical and mathematical methods to decision-making, and the simulation of higher-order thinking through computer programs.[6]
Based on the storage and processing technologies employed, it is possible to distinguish four distinct phases of IT development: pre-mechanical (3000 BC – 1450 AD), mechanical (1450–1840), electromechanical (1840–1940) and electronic (1940–present).[5] This article focuses on the most recent period (electronic), which began in about 1940.

World
Economic Analyst  predict within 100 days, Malaysia will collapse. Stock market & currency value will take a nose dive in a drastic manner.
This is due to world negative economic outlook; World's security issue due to terrorism - ISIS,  & middle East conflict.  There has been much fear on the Spartly Island; where China, Vietnam, Taiwan, Philippine and Malaysia want to claim ownership rights.  The recent China & Russia military training exercise is to show their military alliance & strength. This is to tell US to lay off. Indirectly to warn US, Japan & Phillipine, do not wage war against China or Russia.
The recent crude oil crash is due to oversupply. The Americans are pumping in the world more crude  oil.  The reasons: i) to hurt Russian's economy and her currency as Russian is world's no1. Oil exporter.  US & EU are blaming Russia for Ukraine's turmoil & the unresolved MH 17 issue. ii) to stop terrorists, particularly ISIS for selling cheap smuggled crude oil from Syria & Iraq.
Malaysia is compounded by political uncertainty; corruption, abuse of one's power & withholding the truth.
The world has perceived Malaysia as no. 1 in world ranking in: i)Corruption & Scandals; and ii) world's champion in Credit Cards forgery. 
So my dear friends & family members; please spend your money wisely. Keep your Money  for rainy days. We are heading towards World economic collapse.  The days ahead will be difficult and bumpy. The journey is tough & unpredictable. This will hit hard on All of us; regardless whether you are rich or poor.