Tuesday, May 4, 2010


A computer is a programmable machine that receives input, stores and manipulates data and provides output in a useful format.
The first use of the word "computer" was recorded in 1613, referring to a person who carried out calculations, or computations, and the word continued to be used in that sense until the middle of the 20th century.
The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that a list of instructions  (the program ) can be given to the computer and it will store them and carry them out at some time in the future.
In 1970s IBM computers viz. 1401 and 360 entered office and business enterprises with punched cards.
In 1980s with the advent of Electronic Data Processing minicomputer and desktop computer started coming the market.
Slowly the hard disc capacity started scaling up with memory size. Computers with MBs slowly pushed to GBs and now it is rocketing to TBs.
By multiprocessing and networking the naming of generation came and now we are slowly crossing the fourth generation and leading to theoretical / experimental computers viz. Quantum computer, Chemical Computer, DNA computing, Optical Computer, Spintronics based computer.
Now Where are we ?
Whether the computer can overpower our brains ?
Whether we can call this as desktop or laptop or tablet or wearable or ????