Showing posts with label Topics In Detail. Show all posts
Showing posts with label Topics In Detail. Show all posts

Saturday, 14 December 2013

Bitcoin - The New Generation Currency

Think about a currency which can be used anywhere in the world without any barriers of banks or government. A single currency for the whole world which is transacted online. No inflation, deflation appreciation or depreciation due to the comparison done with Dollar. Pay your university fees, EMI, do shopping etc… anywhere in the world without the hassle of currency exchange.

Sounds good? Try bitcoin. Switch to it.


What is a Bitcoin?

Bitcoin is an open source peer-to-peer payment network and digital currency introduced in 2009. It was developed by Satoshi Nakamoto.  It uses cryptography to secure funds and hence it is called Cryptocurrency. Transactions transfer bitcoins, the unit of currency, between Bitcoin addresses derived from cryptographic public keys. There are totally 2.10 crore bitcoins created. Currently only 1.10 coins are available for transactions. Bitcoin lets you exchange money in a different way than with usual banks.

Bitcoin price is volatile

The price of a bitcoin can unpredictably increase or decrease over a short period of time due to its young economy, novel nature, and sometimes illiquid markets. Consequently, keeping your savings with Bitcoin is not recommended at this point. Bitcoin should be seen like a high risk asset, and you should never store money that you cannot afford to lose with Bitcoin. If you receive payments with Bitcoin, many service providers can convert them to your local currency.

Wallet

A collection of addresses and their associated private keys is known as a wallet. These may be stored online on the web, on local hardware (like a personal computer or mobile device), or on paper print-outs. Bitcoins are increasingly used as payment for products and services. An advantage of bitcoin is that transaction fees are lower than the 2 to 3% typically imposed by credit card processors. Notable vendors include OkCupid, Reddit, WordPress, and Chinese Internet giant Baidu.

Blockchain

The block chain is a shared public ledger on which the entire Bitcoin network relies. All confirmed transactions are included in the block chain. This way, Bitcoin wallets can calculate their spendable balance and new transactions can be verified to be spending bitcoins that are actually owned by the spender. By keeping a record of all transactions, the blockchain prevents double-spending (copying one bitcoin and spending it in multiple different places) because the record shows that once a bitcoin has been spent, the previous owner no longer controls it. The blockchain is not maintained by a central body but by a distributed network of computers that run a program to solve cryptographic puzzles relating to information in the blockchain.

How to get bitcoins?

Mining is how new bitcoins are generated. Users who devote computing power to maintain the blockchain are called "miners". They are awarded in bitcoin when they are first to solve cryptographic puzzles relating to information in the blockchain. The mathematical calculations performed by miners' computers serve to verify that each transaction is valid and add the information to the blockchain.  As more bitcoins come into circulation, the puzzles involved in mining them become increasingly difficult, and the rewards are halved at regular intervals, until 21 million bitcoins have been created and production stops. As Bitcoin achieves wider recognition and more people compete to mine the coins, competition for the limited number of bitcoins awarded for solving the cryptographic puzzles becomes more steep and more powerful computers are needed in order to compete – a fact which has spawned a technology boom in sales of Bitcoin mining technology.

Transactions

A transaction is a transfer of value between Bitcoin wallets that gets included in the block chain. Bitcoin wallets keep a secret piece of data called a private key or seed, which is used to sign transactions, providing a mathematical proof that they have come from the owner of the wallet. The signature also prevents the transaction from being altered by anybody once it has been issued. All transactions are broadcast between users and usually begin to be confirmed by the network in the following 10 minutes, through a process called mining.

Security and control

All Bitcoin transactions are stored publicly and permanently on the network, which means anyone can see the balance and transactions of any Bitcoin address. However, the identity of the user behind an address remains unknown until information is revealed during a purchase or in other circumstances. This is one reason why Bitcoin addresses should only be used once. Always remember that it is your responsibility to adopt good practices in order to protect your privacy. Bitcoin transactions are secured by military grade cryptography. Nobody can charge you money or make a payment on your behalf. So long as you take the required steps to protect your wallet, Bitcoin can give you control over your money and a strong level of protection against many types of fraud.

Processing Fees

Bitcoins can be transferred from Africa to Canada in 10 minutes. There is no bank to slow down the process, level outrageous fees, or freeze the transfer. You can pay your neighbors the same way as you can pay a member of your family in another country. Bitcoin allows you to send and receive payments at very low cost. Except for special cases like very small payments, there is no enforced fee. It is however recommended to pay a higher voluntary fee for faster confirmation of your transaction and to remunerate the people who operate the Bitcoin network.

Privacy

With Bitcoin, there is no credit card number that some malicious actor can collect in order to impersonate you. In fact, it is even possible to send a payment without revealing your identity, almost just like with physical money.

History

Bitcoins were introduced in 2009 January 3 by a computer programmer named Satoshi Nakamoto.  In 2011 the value of one bitcoin rapidly rose from about $0.30 to $32, before falling back down to $2. During November 2013, the China-based Bitcoin exchange BTC China overtook Japan-based Mt. Gox and Europe-based Bitstamp to become the largest Bitcoin trading exchange by trade volume. On 19 November 2013, the value of Bitcoin on the Mt. Gox exchange soared to a peak of US$900 following a United States Senate committee hearing, at which the committee was informed that virtual currencies were a legitimate financial service. 

How does Bitcoin work?

First install a Bitcoin wallet on your computer or mobile phone. Once you have installed, it will generate your first Bitcoin address and you can create more whenever you need one. You can disclose your addresses to your friends so that they can pay you or vice versa. In fact, this is pretty similar to how email works, except that Bitcoin addresses should only be used once.

Saturday, 9 November 2013

Reserve Bank of India - Important points



The Central Board of Directors is the main committee of the central bank. The Government of India appoints the directors for a four-year term. 
The Board consists of a governor, four deputy governors, fifteen directors to represent the regional boards, one from the Ministry of Finance and ten other directors from various fields.
 The RBI acted as Burma's and Pakistan’s (until June 1948) central bank.

Highlights
Established
April 1, 1935
Establishment Act
Reserve Bank of India Act, 1934.
Initial Headquarters
Calcutta
Present Headquarters
Mumbai (From 1937)
Number of regional offices
19
Sub offices
9
Training Institutes of RBI
·         College of Agricultural Banking
·          Reserve Bank of India Staff College
Fully owned Subsidiaries
·         Deposit Insurance and Credit Guarantee Corporation of India(DICGC)
·         Bharatiya Reserve Bank Note Mudran Private Limited(BRBNMPL)
·         National Housing Bank (NHB)
Nationalization year
1949
No of Departments



28
Functions
·         Monopoly of Note issue
·         Banker, Adviser and Agent to the Govt. of India
·         Banker to Banks
·         Custodian of Foreign exchange and gold.
·         Re-discounts bills of exchange and hundis.
·         Lender of last Resort
·         Maintains stability of foreign value of Rupee.
·         Acts as clearing house
·         Credit control
Institutions established by the RBI
·         Deposit Insurance and Credit Guarantee Corporation
·         Unit Trust of India (1964), the first mutual fund
·          of the country
·         Industrial Development Bank of India (1964)
·         National Bank for Agriculture and Rural Development (1982), for promoting rural and agricultural credit
·         Discount and Finance House of India (1988), a money market intermediary and a primary dealer in government securities
·         National Housing Bank (1989), an apex financial institution for promoting and regulating housing finance
·         Securities and Trading Corporation of India (1994)

Board for Financial Supervision (BFS)
The Reserve Bank of India performs the function of financial supervision under the guidance of the Board for Financial Supervision (BFS). The Board was constituted in November 1994 as a committee of the Central Board of Directors of the Reserve Bank of India. It consists of four Directors from the Central Board (term of two years), and is chaired by the Governor. The Board is required to meet normally once every month.

What is RBI’s Clean Note Policy?
·         Education campaign to handle notes:  no stapling, writing, excessive folding.
·         Timely removal of soiled notes: use of currency verification and processing systems and sorting machines.
·         Exchange facility for torn, mutilated or defective notes: at currency chests of commercial banks and in Reserve Bank issue offices.

Printing presses for printing notes
·        Dewas in Madhya Pradesh
·         Nasik in Maharashtra
·         Mysore in Karnataka
·         Salboni in West Bengal.


The presses in Madhya Pradesh and Maharashtra are owned by the Security Printing and Minting Corporation of India (SPMCIL), a wholly owned company of the Government of India. The presses in Karnataka and West Bengal are set up by Bharatiya Reserve Bank Note Mudran Private Limited (BRBNMPL), a wholly owned subsidiary of the Reserve Bank.
Coins are minted by the Government of India. 
RBI is the agent of the Government for distribution, issue and handling of coins. Four mints are in operation. 

They are
·         Mumbai
·         Noida in Uttar Pradesh
·         Kolkata
·         Hyderabad

Wednesday, 6 November 2013

Mangalyan - Highlights of India’s voyage to Mars

After the successful launch of Chandrayaan, ISRO has launched its next venture to explore deep space, the vehicle to Mars also known as Mars Orbiter Mission. The PSLV- C25 with India's Mars Orbiter on board lifts off majestically at 2.38 p.m on November 5, 2013 from the first launch pad at the Satish Dhawan Space Centre in Sriharkota. 



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How is Mars Orbiter Insertion done?

Mangalyan - Highlights of India’s voyage to Mars
Mission Name
Mars Orbiter Mission (MOM)
Journey Distance
680 million kilometers
Mission Days
300 Days
Cost
Rs.450 Crores
Failed Attempts
Soviet Union, US, Japan, China
Others who achieved it before
Soviet Union, the United States, Europe
Weight
1,350 kg
Instruments in scientific payload
·         Mars Exospheric Neutral Composition Analyzer (MENCA)
·         Methane Sensor for Mars (MSM)
·         Mars Color Camera (MCC)
·         Probe For Infrared Spectroscopy for Mars (PRISM)
·         Lyman-alpha photometer to measure atomic hydrogen in the Martian atmosphere.
Name of the carrier
PSLV-C25
Expected to arrive on Mars
September 14, 2014
Programme Director
M. Annadurai
Record of ISRO
Out of the 25 launches of ISRO, 24 had been successful in a row.
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