CHAPTER - 1 CONCEPTS OF COMPUTER

1. UNIT-1
CHAPTER -1 Concepts of Computer
1. Definition
2. Characteristics of Computer
3. History of Evolution of Computers
4. Components of Computer System
5. Types of Computers
6. Binary code
7. Coding System
8. Data Processing Cycle
9. Different Types of data processing

2. 1. Definition
Computer is an electronic device which can
input data, store data, process data and
output information in the useful manner.

3. 2 .Characteristics of Computer
There are 8 important characteristics features of
computer
1. Speed
2. Accuracy
3. Automatic
4. DiLigence
5. Versatile
6. Memory
7. Cheaper (Reduction of cost)
8. Needs a User interface

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6. 3. Diligence :

7. 4. AUTOMATIC:-

8. 5. Versatility:
• Adaptability (Versatile) : In our day to day life
computer has been a part their extended
flexibility they are used, all over the world.
They can be used as personal computer, for
home uses, for business oriented tasks,
weather forecasting, space exploration,
Teaching, Railway, Banking, Medicine etc. all
modern computer can perform different kind
of tasks simultaneously.

9. STOREHOUSE(MEMORY)
6. High Storage Capacity
• Secondary storage devices are the key for the
data storage. They store the data for which
the user wants to retrieve these data for
future use. The examples for various
secondary devices are Floppy Disk Optical
Disks (CD), Zip Drives, Thumb Drives, Hard
Disk Etc. the data of smaller size can be easily
fetched and they can be copied to the primary
memory (RAM).

10. Secondary Memory

11. FLOPPY DISK

12. (3) History of Evolution of Computers

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14. Napier’s Bones

15. PASCALINE

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21. MARK-I
1944

22. ENIAC is accepted as the first successful high-
speed electronic digital computer and was used
from 1946 to 1955.

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