Application of Computer in Economics Course:

Transcript:Application of Computer in Economics Course::
Application of Computer in Economics Course: DE-403(ii) Course teacher Dr. Sanatan Nayak Dept. of Economics, B.B. Ambedkar University Rae Bareli Road, Lucknow-25 Contents of Introductions Definitions Features or characteristics Basic computer Organization/ Components Evolution Definitions The word computer has been derived from the word “compute”, means to calculate with high speed. Original objectives To create a fast calculating machine Now-a-days, 80 % of data are for non-mathematics. It is created for operation of information and data, bio-data, railway tickets, air tickets, govt. data base. What the computer does, Store the data Process the data Retrieve the data (data processor) Characteristics of Computer High speed Million: seconds (1/10000), micro seconds (1/10000000), nano seconds (1/10 000000000), piso seconds (1/10 000 000 000 000). Accuracy: error occurs due to human rather than technological weakness. Diligence: it is lack of monotony, tiredness, lack of concentration. Versatility: different type of work. Power of remembering: it can store and remember any amount of information. No I.Q: it does not have intelligence No feelings: no heart, no taste, no knowledge and experience Evolution of Computer Necessary is the mother of invention. The earliest one that qualifies “abaccus” or “soroban”. It was invented in 600 B.C. It does only addition, subtraction with little speed. Manual Calculating device: John Napier’s Card Board- 17th century and updated in 1890 AD. First mechanical machine by Blair Pascal in 1642 AD. Baron Gottfried: German’s first calculator for multiplication. Key Board originated in 1880 AD in USA. Herman Hollerith: Punched cards are extensively used a input media in modern digital computer. Basic Computer’s Organization Five important operations: Inputting Storing Processing Outputting Controlling Therefore, five important functional units or blocks. Input Unit: Data and information must be given through outside device. Through Key Board All the data and instruction are transformed into binary codes/acceptable form, those are saved in primary memory. It supplies the converted instructions and data to the computer system for further processing. Basic Computer’s Organization cont …. 2. Output Unit: It is reverse of input Unit It accept the result produced by the computer, which are in coded form and can not be easily understand by us. It convert from binary form to the human acceptable form. It is designed to the external environment through printer etc. It supplies information and results of the computer to the outside world. 3. Storage Unit: All the data and instructions to be stored and