31-03-2014, 11:56 AM
COMPUTER BEGINER BOOK
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INTRODUCTION TO COMPUTERS
Made by - Charles Babbage
Introduction to Computer (Digital): Computers is termed as knowledge of Engine since the word computer is derived from the word compute, which may any type of calculations. So it is clear that computer is related with calculation as well as manipulations. Thus In place trying computer as the simple of calculator. It is the machine which gives up information on the basic of processing provided by it and so an appropriate met is given to it Named as "A computer" whose main work is information process is whether. It is the mathematical or Non-Mathematics.
Characteristics of Computer / Digital Computers OR Features
According to Definition of a computers and the increasing use of computers in different area is special characteristics or as follows:-
1. Speed – Computer are very fast device capable to performing several calculation at very high speed Accuracy. Electronic pulses travel at in incredible speed and because the computer is the electronic devices its Internal speed is virtually is instant an low thus speed of electron of which is measure in terms of millisecond (ms), micro second (ms), naino second (ns), Pico second (ps) that means hundreds of millions of crossing operations can be performs in one second.
2. Accuracy - computers are very accurate and they can perform their 100 – 1000 operations with garbage accuracy and without creating any errors. The accuracy of the computer is illustrated be the term (GIGO), which means (Garbage in Garbage out). The corresponds Data input data produce correct results are the incorrect data given the wrong result.
3. Reliability : - Computers output is generation 100% eligible that means the input Data entered into the system should be correct introduces the correct result an the incorrect Data given the result in accurate. That means the informatics should be in desired order into produces a correct result on information.
4. Diligence : Computer can perform a given set of instruction and functions and lessly without getting tired or do red that means it is free from monitory, tiredness an lab of concentration without creating any others an without grumbling.
5. Versatility: The commuters can be used for a verity of jobs that is calculation Data retrieval controlling machine, Entertains. It is capable of performing different task provided by the user in the logical format.
6. Automation : automation wrappers that no human intervention is require once the instructions and Data all given to the system that means the task is Automatically until the lost instruction is stop.
7. Memory Capability / Storage :- Computers is an store miscible amount of information into the form of Data an instruction and the total instruction can be further recall as more the user requirement. It provide of fast accurate and readable Device with which the crosses the Data.
8. Decision-making capability : - The system can decide which come decide in own decision per the user's requirement and it is also in logically format.
9. Consistency : - Computers are very highly Constance and they are ideal machine for carrying out repetitive, complex and voluminous out task.
10. No feelings : - Computer is devoid of Dem that means they have no feelings because they all machine and call the instruction are given by the user.
11. Some Important terms used in Computer Definition of system : - A system is group of integrated parts that have the common purpose of achieving some objectives so the following three characteristic : -
(1) A system has more than one element.
(2) All the elements of a system are logically related.
(3) All the elements of a system are controlled in such way that the system goal is archival.
History of Computer: -
The history of computers dates back to long and long ago and a developed by the ancient times with the passage of time pictures and symbols. The History of computer is of social signification to use because many of the most important accent connected with have occurred with in your by time. Some of the important develop computing device and them inventors as well as them purpose is described below in the form of tabular chart.Computing Device / Inventor
NAVIGATING WINDOWS 98/2000/XP
Windows 98/2000/XP is a graphical user interface (GUI) designed to make operating your computer intuitive and easy. Programs, files, and other resources are represented graphically in Windows 98/2000/XP and are generally accessed by using a mouse (or similar pointing device) and clicking (or double-clicking) on that item. Most resources in /Windows 98/2000/XP are accessed via the "desktop", i.e. the items that appear on your computer screen when you start your computer.