Operating Systems

Ubuntu : A Linux Distribution Operating System

Operating System

      Operating System is a System Software which is an Interface between Application software and Hardware also co ordinates between processor,input/output devices and Memory Allocation.Also is the first program to load into the memory after boot a computer.

Functions of an Operating System

• It is used as an easy to use interface for the User to the computer system.
• It assigns different tasks to the processor to be performed by the computer system.
• It allocated memory and storage for system programs, user applications and data.
• It coordinates between Input / Output Devices and their activities .
• It stores data in the form of files and helps in modifying them with the help of user applications and transferring data to other devices.
• It maintains Job priority.
• It transfer the control from one program to another program by the control signal from the user.
• It maintains data Security and Integrity.
• In case of errors it produces error messages and debugging codes.
• It maintains log of users in a Multi User Operating System.

BODMAS Rule

Hi friends ..! BODMAS Rule helps us solve the arithmetic problems with more than one operations(multiplication,addition..)

Let us see an example :

3 x 5 + 7 = 22

       Here BODMAS helps us to first Multiply 3x5 rather than to add 5+7 to get the correct result of the above expression.

(20 x 5) - 8 = 92

      Like wise we use to calculate the values of the number which are inside the Brackets 20x5 before calculating them with the values outside the brackets -8 .

RBI Inflation Control Instruments

Direct Instruments

1. CRR - Cash Reserve Ratio
2. SLR  - Statutory Liquidity Ratio
3. Refinance Facilities (Sector Specific) 

Indirect Instruments

1. LAF - Liquidity Adjustment Facility
2. MSF - Marginal Standing Facility
3. OMO - Open Market Operations
4. Repo - Repurchase Option Rate 
5. Reverse Repo - Reverse Repurchase Option Rate
6. Bank Rate

Introduction To Computers

Computer : An Electronic Device which process input data (number, text, sound, video) and converts it into useful Information (number, text, sound, video).

Input Device : Peripheral of the computer used to feed data into the computer like Keyboard , Mouse etc.

Output Device : Peripheral of the computer used to display information from the computer like Monitor,Printer etc. 

CPU Central Processing Unit : Here all the data in processed and converted into Information with the help of Processor and Main Memory (RAM) .

Indian Banking System

Regulatory Authorities

IRDA : Insurance Regulatory  and Development Authority of India
PFRDA : Pension Fund Regulatory and Development Authority of India
RBI : Reserve Bank of India
SEBI : Securities and Exchange Board of India

Development Banks

SIDBI : Small Industries Development Bank of India

NABARD : National Bank for Agriculture and Rural Development

EXIM : Export and Import Bank of India

NHB : National Housing Bank